R. A. Rashid, U. N. Rafie, N. S. Ramli, M. F. A. M. Noor, and S. Sharkawi, “Challenges Faced by Part-Time Doctoral Students in Managing Psychological Well-being: A Qualitative Study ”, ASSRJ, vol. 10, no. 6.2, pp. 84–97, Jul. 2023.