Ryan , Alan G., and Marshall A. Nay. “A Study of Personnel Roles in the CRIB Project”. Canadian Journal of Education/Revue canadienne de l’éducation 5, no. 4 (January 1, 1980): 70–90. Accessed September 19, 2026. https://cje.journals.publicknowledgeproject.org/cje/index.php/cje-rce/article/view/8085.