Zai, N.A. and Siti Hazzah Nur R 2023. IMPLEMENTATION OF THE INDONESIAN ELECTRONIC HAJJ HEALTH CARD (KKJH) SERVICE IN MEDAN CITY. Indonesian Journal of Social Sciences, Policy and Politics. 1, 2 (Jun. 2023), 54–59. DOI:https://doi.org/10.69745/ijsspp.v1i2.33.