Prochaska, James, & Norcross, John. Systems of Psychotherapy:A Transtheoretical Analysis. Canadian Journal of Counselling and Psychotherapy, [S. l.], v. 32, n. 1, 2007. Disponível em: https://jmss.org/index.php/rcc/article/view/59035. Acesso em: 22 oct. 2026.