Hett , G. G. (1981) “Two Types of Behavior Management Programs and Their Effects upon Student Achievement”, Canadian Journal of Education/Revue canadienne de l’éducation, 6(1), pp. 32–41. Available at: https://cje.journals.publicknowledgeproject.org/index.php/cje-rce/article/view/8091 (Accessed: 20 September 2026).