Cita APA (7th ed.)

Gravetter, F. J., & Forzano, L. B. (2009). Research methods for the behavioral sciences (3rd ed.). Wadsworth Cengage Learning.

Cita Chicago (17th ed.)

Gravetter, Frederick J., i Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences. 3rd ed. Australia: Wadsworth Cengage Learning, 2009.

Cita MLA (9th ed.)

Gravetter, Frederick J., i Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences. 3rd ed. Wadsworth Cengage Learning, 2009.