Ramli, Mohd Anuar, et al. “Autoriti Kerajaan Dalam Mewajibkan Vaksinasi Kanak-Kanak: Kajian Menurut Perspektif Hukum Islam (Authority of the Government to Enforce Child Vaccination: A Study from the Islamic Ruling Perspective)”. UMRAN - Journal of Islamic and Civilizational Studies, vol. 6, no. 2, June 2019, pp. 21-35, doi:10.11113/umran2019.6n2.243.