ALTMAN, Harold A.; CONKLIN, Rodney C.; HUGHES, Ronald C. Group Counselling of Underachievers. Canadian Journal of Counselling and Psychotherapy, [S. l.], v. 6, n. 2, 1972. Disponível em: https://cdm.ucalgary.ca/index.php/rcc/article/view/60847. Acesso em: 5 jan. 2026.