GILLINGHAM, D. E. Christensen, L. B. (1977). <i>Experimental Methodology.</i>. Canadian Journal of Counselling and Psychotherapy, [S. l.], v. 14, n. 3, 2012. Disponível em: https://cjc-rcc.ucalgary.ca/article/view/60344. Acesso em: 26 nov. 2024.