Ijtihad Umar bin Khattab dalam penetapan syariat Islam - Baltaji, Muhammad; Siregar, Abdul Rachman Saleh (Puchong : Berlian Publications, 2007)
Keywords: 'Umar ibn al-Khattab, -- Caliph, -- d. 644 -- Contributions in Islamic law; Islamic law -- Interpretation and construction; Islamic law -- Sources