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APA Citation Style Guide (6th): Online Encyclopedias


Formatting is important!   

√   Double-space within and between each entry.

√   The first line of each source starts at the left margin and all lines after are indented five space.  (Called a hanging indent)

For help go to the Tips on formatting tab.


Article from a library electronic encyclopedia

Rayside, D. (2004). Family law and policy. M. Stein (Ed.) In Encyclopedia of lesbian, gay, bisexual and transgendered history in America, (Vol. 1). Retrieved from


Article from an online encyclopedia

Bennett, L. W. & Willilams, O. J. (2017). Perpetators of intimate partner violence.  In Encyclopedia of Social Work.  Retrieved from


Print reference book

Gottlieb, R., & Mars, L. (Eds.) (2010). The complete mental health directory: A comprehensive sourcebook for individuals and professionals (7th ed.). Amenia, NY: Grey House Publishing.