Wade, C., & Tavris, C. (1993). Psychology (3rd ed.). HarperCollins.
Dyfyniad Arddull ChicagoWade, Carole, and Carol Tavris. Psychology. 3rd ed. New York: HarperCollins, 1993.
Dyfyniad MLAWade, Carole, and Carol Tavris. Psychology. 3rd ed. HarperCollins, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.