BIOL 100: Survey of Biology (Bodas)

This guide is for students in Kanchan Bodas' sections of Biology 100. Use this guide for your biology research projects.

Why Cite Sources?

Why Cite Sources?

Avoid Plagiarizing: You must cite any direct quotation, summary, or paraphrase of any idea or fact from your research. Citing sources is giving credit to the original author and publication where you found the information. Not citing sources is plagiarism and you may be subject to academic discipline.

Lend Authority to Your Paper: By referencing the work of scholars, professionals, and individuals with lived experiences around a topic, you demonstrate that your own research is based on solid, reliable information and that you are capable of critical thinking by being able to synthesize that research into your own.

Provide a Path: By citing sources, you provide the information that readers of your essay or presentation need in order to locate the same sources that you did.

Acknowledge Other's Work: Part of your research is built upon the research of other people. In the scholarship tradition in the United States, it is considered respectful and fair to give them credit for their hard work (just as you might hope someone would give you credit if they were quoting your own work!)

APA

APA Citation Style

APA (American Psychological Association) Style is used in Social Science disciplines, like Psychology and Education. Always consult your assignment or ask your instructor for the correct citation style to use

Source: "Introduction to Citation Styles: APA 7th ed." by CSUDH Library, is licensed under a Standard YouTube License.

Learn the basic conventions of citing sources in-text and in a reference list using the American Psychological Association (APA) Style, 7th edition.

Citing Journal Articles - APA

Journal Article - from a Database which includes a DOI Number

*reminder that titles of articles are written in sentence case: (proper nouns, first word of title and subtitle are capitalized; all other words lower case)

 

One Author - with DOI

Author's Last Name, First Initial. Second Initial if Given. (Year of Publication). Title of article in sentence case: Subtitle if any. Name of Journal, Volume Number(Issue Number), first page number-last page number. DOI formatted as a hyperlink

Citation examples
Example

Bailey, N.W. (2012). Evolutionary models of extended phenotypes. Trends in Ecology & Evolution, 27(3), 561-569. https://doi.org/10.1037/rev0000126

In-Text Paraphrase

(Author's Last Name, Year)

Example: (Bailey, 2012)

In-Text Quote

(Author's Last Name, Year, p. Page Number)

(Bailey, 2012, p. 562)

Two to Twenty Authors - with DOI

Author's Last Name, First Initial. Second Initial if Given., & Last Name of Second Author, First Initial. Second Initial if Given. (Year of Publication). Title of article in sentence case: Subtitle if any. Name of Journal, Volume Number(Issue Number), first page number-last page number. DOI formatted as a hyperlink

Note: Separate the authors' names by putting a comma between them. For the final author listed add an ampersand (&) after the comma and before the final author's last name.

Citation example
Example

Pempek, T.A., Yermolayeva, Y.A., & Calvert, S.L. (2009). College students' social networking experiences on Facebook. Journal of Applied Developmental Psychology, 3(2)227-238. https://doi.org/10.1016/j.appdev.2008.12.010t

In-Text See Chart Below "In-Text Citation For Two or More Authors/Editors"
In-Text Citation For Two or More Authors/Editors
In-text citation examples
Number of Authors/Editors First Time Paraphrased Second and Subsequent Times Paraphrased First Time Quoting Second and Subsequent Times Quoting
Two

(Case & Daristotle, 2011)

(Case & Daristotle, 2011)

(Case & Daristotle, 2011, p. 57) (Case & Daristotle, 2011, p. 57)
Three or more

 

(Case et al.,2011)              

(Case et al., 2011) (Case et al., 2011, p. 57)                 (Case et al., 2011, p. 57)

21 or More Authors

List the first nineteen authors followed by three spaced ellipse points (. . .) , and then the last author's name.

Citation examples
Example

Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Sha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropepelewski, C., Wang, J., Leetmaa, A., ... Joesph, D. (1996). The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meteorological Society, 77(3), 437-471. https://doi.org/fg6rf9

In-Text Paraphrase

(First author's last name et al., Year)

Example: (Kalnay et al., 1996)

In-Text Quote

(First author's last name et al., Year, p. Page number quote is from)

Example: (Kalnay et al., 1996, p. 439)

Journal Article - from a Database with no DOI Number

One Author - No DOI

Author's Last Name, First Initial. Second Initial if Given. (Year of Publication). Title of article in sentence case: Subtitle if any. Name of Journal, Volume Number(Issue Number), first page number-last page number. 

Note: The APA Manual (7th ed.) recommends not including the database or the URL of the journal home page for online articles without a DOI. 

Citation examples
Example

Carlisle, D. (2012). In the line of fire. Nursing Standard, 26(39), 18-19. 

In-Text Paraphrase

(Author's Last Name, Year)

Example: (Carlisle, 2012)

In-Text Quote

(Author's Last Name, Year, p. Page Number)

Example: (Carlisle, 2012, p. 18)

Two to Twenty Authors - no DOI

Author's Last Name, First Initial. Second Initial if Given., & Last Name of Second Author, First Initial. Second Initial if Given. (Year of Publication). Title of article in sentence case: Subtitle if any. Name of Journal, Volume Number(Issue Number), first page number-last page number if given. 

Note: In the reference list invert all authors' names; give last names and initials for only up to and including twenty authors. When a source has twenty-one or more authors, include the first twenty authors’ names, then three ellipses (…), and add the last author’s name. 

Note: The APA Manual (7th ed.) recommends not including the library database for journal articles without a DOI as these works are widely available.

Citation example
Example

Bogan, E., & Paun, E. (2011). The assimilation of immigrants into the British labor market. Geopolitics, History, and International Relations, 3(2), 272. 

In-Text See Chart Below "In-Text Citation For Two or More Authors/Editors"
In-Text Citation For Two or More Authors/Editors
In-text citation examples
Number of Authors/Editors First Time Paraphrased Second and Subsequent Times Paraphrased First Time Quoting Second and Subsequent Times Quoting
Two

(Case & Daristotle, 2011)

(Case & Daristotle, 2011)

(Case & Daristotle, 2011, p. 57) (Case & Daristotle, 2011, p. 57)
Three or more

 

(Case et al.,2011)              

(Case et al., 2011) (Case et al., 2011, p. 57)                 (Case et al., 2011, p. 57)

21 or More Authors - no DOI

List the first nineteen authors followed by three spaced ellipse points (. . .) , and then the last author's name.

Citation example
Example

Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Sha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropepelewski, C., Wang, J., Leetmaa, A., ... Joesph, D. (1996). The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meteorological Society, 77(3), 437-471. 

In-Text Paraphrase

(First author's last name et al., Year)

Example: (Kalnay et al., 1996)

In-Text Quote

(First author's last name et al., Year, p. Page number quote is from)

Example: (Kalnay et al., 1996, p. 439)

Journal Article - from a Website

Author's Last Name, First Initial. Second Initial if Given. (Year of Publication). Title of article in sentence case: Subtitle if any. Name of Journal, Volume Number(Issue Number if given). URL

Citation examples
Example

Flachs, A. (2010). Food for thought: The social impact of community gardens in the Greater Cleveland Area. Electronic Green Journal, 1(30). https://escholarship.org/uc/item/6bh7j4z4

In-Text Paraphrase

(Author's Last Name, Year)

(Flachs, 2010)

In-Text Quote

(Author's Last Name, Year, p. Page Number)

Example: (Flachs, 2010, Conclusion section, para. 3)

Note: In this example, there were no visible page numbers or paragraph numbers, so you can cite the section heading and the number of the paragraph in that section to identify where your quote came from. 

Journal Article - in Print

Author's Last Name, First Initial. Second Initial if Given. (Year of Publication). Title of article in sentence case: Subtitle if any. Name of Journal, Volume Number(Issue Number), first page number-last page number.

Citation Examples
Example

Jungers, W.L. (2010). Biomechanics: Barefoot running strikes back. Nature, 463(2), 433-434.

In-Text Paraphrase

(Author's Last Name, Year)

Example: (Jungers, 2010)

In-Text Quote

(Author's Last Name, Year, p. Page number)

Example: (Jungers, 2010, p. 433)

Automatic Citation Generator

NoodleTools

Access online tutorials using the links below:

Quick Guide - APA

Quick Guide - APA Citation Style

More on APA