Allen, Thomas W. and Whiteley, John M. (1968). Dimensions of Effective Counseling: Cognitive Flexibility and Psychological Openness in Counselor Selection. Canadian Journal of Counselling and Psychotherapy, [S. l.], v. 3, n. 4, 2012. Disponível em: https://jmss.org/index.php/rcc/article/view/60671. Acesso em: 25 oct. 2026.