Westwood M. Kanfer, F. and Goldstein, A. (1975). <i>Helping People Change: A Textbook of Methods.</i>. Can J Couns Psychother [Internet]. 2012 Feb. 28 [cited 2025 Dec. 31];11(2). Available from: https://cdm.ucalgary.ca/index.php/rcc/article/view/60105