MUHAMMAD, Q. I. (2002). Kebijakan Ekonomi Umar Bin Khaththab. Azzam.
Chicago Style (17th ed.) CitationMUHAMMAD, Quthb Ibrahim. Kebijakan Ekonomi Umar Bin Khaththab. Azzam, 2002.
MLA (8th ed.) CitationMUHAMMAD, Quthb Ibrahim. Kebijakan Ekonomi Umar Bin Khaththab. Azzam, 2002.
Warning: These citations may not always be 100% accurate.