Dyfyniad APA

Wortman, C. B., & Loftus, E. F. ,. E. (1992). Psychology (4th ed.). McGraw hill.

Dyfyniad Arddull Chicago

Wortman, Camille B., and Elizabeth F. ,Marshall,Mary E. Loftus. Psychology. 4th ed. New York: McGraw hill, 1992.

Dyfyniad MLA

Wortman, Camille B., and Elizabeth F. ,Marshall,Mary E. Loftus. Psychology. 4th ed. McGraw hill, 1992.

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