Dyfyniad APA

Grusec, J. E., & Walters, G. C. (1990). Foundations of psychology. Copp Clark Pitman.

Dyfyniad Arddull Chicago

Grusec, Joan E., and Gary C. Walters. Foundations of Psychology. Toronto: Copp Clark Pitman, 1990.

Dyfyniad MLA

Grusec, Joan E., and Gary C. Walters. Foundations of Psychology. Copp Clark Pitman, 1990.

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