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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).
Basic Rules for Citing a Journal Article. Include up to 7 authors names in reference list (p. 184 APA manual 6th ed.) Capitalize the first word of the article title and the first word of the subtitle, if any, and any proper nouns. Do NOT italicize the article title; do NOT put quotation marks around it. Journal name and volume number are italicized.