binti Si-Rajab, S., P. Madya, and D. K. bin Musa. “The Level of Instructional Leadership Practices Among Principals of National Religious Secondary School in Malaysia”. International Journal of Scientific Research and Management, Vol. 7, no. 03, Mar. 2019, pp. EL-2019, doi:10.18535/ijsrm/v7i3.el03.