Khairi, K. F., N. H. Laili, and A. F. Kamarubahrin. “Takaful Scheme for Mental Health Disorders: A Systematic Literature Review”. Al-Uqud : Journal of Islamic Economics, vol. 5, no. 1, Dec. 2020, pp. 29-42, doi:10.26740/al-uqud.v5n1.p29-42.