Zaman, Qomarus. “KALENDER ISLAM INTERNASIONAL (Analisis Terhadap Sistem Kalender Unifikasi Jamaludin Abd. Raziq)”. UNIVERSUM: Jurnal Keislaman dan Kebudayaan 17, no. 1 (June 10, 2023). Accessed July 1, 2026. http://103.134.17.251/universum/article/view/982.