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Proper APA format for sources with three to six authors requires listing the last names of all authors the first time you cite the source as well as the publication date. ...results indicated a strong positive correlation between the two variables (Robsen, Hutchkins, Ru, & Selanis, 1989).
When a work has six or more authors, cite only the first authorâs surname, followed by et al. and the year for the first and all subsequent instances. Page 5 Based on the Publication Manual of the American Psychological Association, Sixth Edition. This Writing Center Guide was last revised on 10/29/2009. REFERENCES References go at the end of your document and contain only works which are cited within the text. Hanging indentations (when all lines but the first are indented) should be used for APA Style References.