APA (7th ed.) Citation

Vallis, T. M. (1991). The challenge of cognitive therapy: Applications to nontraditional populations. Plenum Press.

Chicago Style (17th ed.) Citation

Vallis, T. M. The Challenge of Cognitive Therapy: Applications to Nontraditional Populations. New York, NY [u.a.]: Plenum Press, 1991.

MLA (9th ed.) Citation

Vallis, T. M. The Challenge of Cognitive Therapy: Applications to Nontraditional Populations. Plenum Press, 1991.