Gaya APA

Ullmann, L, P., Krasner, L. (1965). Case Studies In Behavior Modification (Ed.1). United States of America: Holt Rinehart and Winston, Inc..

Gaya MLA

Ullmann, Leonard, P., Krasner, Leonard. "Case Studies In Behavior Modification". Ed.1 United States of America: Holt Rinehart and Winston, Inc., 1965. Text.