Cita APA

Seligman, M. E. (1990). Learned optimism. Pocket bks..

Citación estilo Chicago

Seligman, Martin E.P. Learned Optimism. New York: Pocket bks., 1990.

Cita MLA

Seligman, Martin E.P. Learned Optimism. Pocket bks., 1990.

Warning: These citations may not always be 100% accurate.