Dyfyniad APA

Bourne , L. E., & Ekstrand , B. R. (1981). Psychology: Its principles and meanings (4th ed.). Holt, Rrinehart and Winston.

Dyfyniad Arddull Chicago

Bourne , Lyle E., and Bruce R. Ekstrand. Psychology: Its Principles and Meanings. 4th ed. New York: Holt, Rrinehart and Winston, 1981.

Dyfyniad MLA

Bourne , Lyle E., and Bruce R. Ekstrand. Psychology: Its Principles and Meanings. 4th ed. Holt, Rrinehart and Winston, 1981.

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