Al-Halawi, M. A. A. (1999). Fatwa dan ijtihad Umar bin Khathtihab: Ensiklopedia Berbagai Persoalan Fiqih. Saint Joseph's University.
Chicago Style (17th ed.) CitationAl-Halawi, Muhammad Abdul Aziz. Fatwa Dan Ijtihad Umar Bin Khathtihab: Ensiklopedia Berbagai Persoalan Fiqih. Saint Joseph's University, 1999.
MLA (8th ed.) CitationAl-Halawi, Muhammad Abdul Aziz. Fatwa Dan Ijtihad Umar Bin Khathtihab: Ensiklopedia Berbagai Persoalan Fiqih. Saint Joseph's University, 1999.
Warning: These citations may not always be 100% accurate.