Dyfyniad APA

Bernstein, D. A., & Clarke-Stewart, . A. (1991). Psychology (2nd ed.). Houghton Mifflin.

Dyfyniad Arddull Chicago

Bernstein, Douglas A., and Alison Clarke-Stewart. Psychology. 2nd ed. Geneva: Houghton Mifflin, 1991.

Dyfyniad MLA

Bernstein, Douglas A., and Alison Clarke-Stewart. Psychology. 2nd ed. Houghton Mifflin, 1991.

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