APA (7th ed.) Zitazioa
Gravetter, F. J., & Forzano, L. B. (2016). Research methods for the behavioral sciences (5th ed.). Cengage Learning.
Chicago Style (17th ed.) Zitazioa
Gravetter, Frederick J., eta Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences. 5th ed. Stamford, CT: Cengage Learning, 2016.
MLA (9th ed.) Zitazioa
Gravetter, Frederick J., eta Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences. 5th ed. Cengage Learning, 2016.
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