Olasunkanmi, ADENIYI Wasiu. “Personality Traits and Administrative Effectiveness of Secondary School Principals in Southwestern Nigeria”. Advances in Social Sciences Research Journal 1, no. 8 (December 30, 2014): 198–206. Accessed May 11, 2024. https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/579.