Schulte, Don P., John R. Slate, and Anthony J. Onwuegbuzie. “Characteristics of Effective School Principals: A Mixed-Research Study”. Alberta Journal of Educational Research 56, no. 2 (July 23, 2010). Accessed April 26, 2024. https://journalhosting.ucalgary.ca/index.php/ajer/article/view/55397.