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