Rogers, Todd, et al. “Influence of Cognitive CoachingSM on the Development of Self-Efficacy and Competency of Principals”. Canadian Journal of Education Revue Canadienne De l’éducation, vol. 40, no. 2, May 2017, pp. 1-23, https://journals.sfu.ca/cje/index.php/cje-rce/article/view/2352.