Citation Style Guides

Citation style help, including MLA, APA, Chicago, CSE, and more.

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Some library databases will format your citations in a specific style, such as MLA, APA or Chicago. 
Check for this option when saving, printing or emailing citations.

Look up a DOI

Need to identify a DOI? CrossRef.org's Simple Text Query web site allows you to enter citations and easily locate existing DOIs. (Note: Users have to register with a valid e-mail address first.)

All about DOIs

What is a DOI?

A digital object identifier, or DOI, is a unique code assigned to each published article that helps to identify and manage the article online.

The APA style guide now requires the inclusion of the DOI when you cite a periodical (assuming that a DOI is available). Some brief examples are below; for complete citation guidelines, consult the official "Publication Manual of the APA."

Periodical with a DOI (7th edition):

Cleary, A., & Reyes, N. (2009). Scene recognition without identification. Acta Psychologica, 131, 53-62. https://doi.org/10.1234567890

Periodical with no DOI (7th edition):

Silick, T.J., & Shutte, N. S. (2006). Emotional intelligence and self esteem mediate between perceived early parental love and adult happiness. E-Journal of Applied Psychology, 2(2), 38-48. http://ojs.lib.swin.edu.au/index.php/ejap

Look up a DOI

Need to identify a DOI? CrossRef.org's Simple Text Query web site allows you to enter citations and easily locate existing DOIs. (Note: Users have to register with a valid e-mail address first.)

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