Bin Habtoor, A. A. S., & Khan, B. M. (2002). Roots of Islamic Civilization: (Public Administration). Yemen studies and research center.
Chicago-viite (17. p.)Bin Habtoor, Abdul Aziz Saleh, ja Bashir Muhammad Khan. Roots of Islamic Civilization: (Public Administration). Sana'a, aden: Yemen studies and research center, 2002.
MLA-viite (9. p.)Bin Habtoor, Abdul Aziz Saleh, ja Bashir Muhammad Khan. Roots of Islamic Civilization: (Public Administration). Yemen studies and research center, 2002.
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