Books, T. S. (2017). 64 Sahabat teladan utama 2: Singa padang pasir ( kisah umar bin al khattab). Sygma Creative Media Corp.
Chicago Style (17th ed.) CitationBooks, Tim Syaamil. 64 Sahabat Teladan Utama 2: Singa Padang Pasir ( Kisah Umar Bin Al Khattab). Sygma Creative Media Corp, 2017.
MLA (8th ed.) CitationBooks, Tim Syaamil. 64 Sahabat Teladan Utama 2: Singa Padang Pasir ( Kisah Umar Bin Al Khattab). Sygma Creative Media Corp, 2017.
Warning: These citations may not always be 100% accurate.