APA (7th ed.) Zitazioa
Gravetter, F. J. (2008). Research methods for the behavioral sciences (3rd ed.). Wadsworth.
Chicago Style (17th ed.) Zitazioa
Gravetter, Frederick J. Research Methods for the Behavioral Sciences. 3rd ed. Belmont: Wadsworth, 2008.
MLA (9th ed.) Zitazioa
Gravetter, Frederick J. Research Methods for the Behavioral Sciences. 3rd ed. Wadsworth, 2008.
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