Kanfer, F. and Goldstein, A. (1975). Helping People Change: A Textbook of Methods. Canadian Journal of Counselling and Psychotherapy, [S. l.], v. 11, n. 2, 2012. Disponível em: https://jmss.org/index.php/rcc/article/view/60105. Acesso em: 27 oct. 2026.