KANFER, F. H. [., & GOLDSTEIN, A. P. [. (1986). Helping people change: A textbook of methods.-- Ed.3. Pergamon.

KANFER, Frederick H. [ed.], and Arnold P. [Ed.] GOLDSTEIN. Helping People Change: A Textbook of Methods.-- Ed.3. New York: Pergamon, 1986.

KANFER, Frederick H. [ed.], and Arnold P. [Ed.] GOLDSTEIN. Helping People Change: A Textbook of Methods.-- Ed.3. Pergamon, 1986.