ABDULLAH, R. G., S. A. IHSAN, J. Z. AHMAD, C. J. MOHAMMAD, R. A. RAMADAN, and N. A. MOHAMMAD. “THE EFFECT OF SLEEP DURATION AND HABITS ON ACADEMIC PERFORMANCE OF PHARMACY STUDENTS”. Journal of Duhok University, Vol. 23, no. 2, Dec. 2020, pp. 205-12, doi:10.26682/sjuod.2020.23.2.21.