Dyfyniad APA

Gravetter, F. J., & Forzano, L. B. (2006). Research methods for the behavioral sciences (2nd ed.). Thomson/Wadsworth.

Dyfyniad Arddull Chicago

Gravetter, Frederick J., and Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences. 2nd ed. Australia ; Belmont, CA: Thomson/Wadsworth, 2006.

Dyfyniad MLA

Gravetter, Frederick J., and Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences. 2nd ed. Thomson/Wadsworth, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.