Dyfyniad APA

Rosenhan, D. L., & Seligman, M. E. P. (1989). Abnormal psychology (2nd ed.). W.W. Norton.

Dyfyniad Arddull Chicago

Rosenhan, David L., and Martin E. P. Seligman. Abnormal Psychology. 2nd ed. New York: W.W. Norton, 1989.

Dyfyniad MLA

Rosenhan, David L., and Martin E. P. Seligman. Abnormal Psychology. 2nd ed. W.W. Norton, 1989.

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