Abdulkadil, Husin H. “Principal’s Supervisory Practices of Mindanao State University-Sulu Laboratory High School: Impact on the Attitudes of Teachers and Parental Involvement”. International Journal of Research in Engineering, Science and Management, vol. 5, no. 11, Nov. 2022, pp. 16-20, https://journal.ijresm.com/index.php/ijresm/article/view/2417.