Roth, Robert H., Hershenson, David B. & Hilliard, Thomas. (1970) The Psychology of Vocational Development. Canadian Journal of Counselling and Psychotherapy, [S. l.], v. 6, n. 3, 1972. Disponível em: https://jmss.org/index.php/rcc/article/view/60883. Acesso em: 27 oct. 2026.