Citazione APA

Seligman, M. E. P., & Walker, E. F. R. (2001). Abnormal psychology (4th ed.). W.W. Norton.

Stile di citazione Chicago

Seligman, Martin E. P., e Elaine F. Rosenhan Walker. Abnormal Psychology. 4th ed. New York: W.W. Norton, 2001.

Citazione MLA

Seligman, Martin E. P., e Elaine F. Rosenhan Walker. Abnormal Psychology. 4th ed. W.W. Norton, 2001.