'Umar, S. R. M. (2001). al-Nizam al-qanuni li-khitabat al-daman al-masrafiyah: Dirasah muqaranah bi-al-fiqh al-Islami. Jami'at al-Azhar.
Chicago Style (17th ed.) Citation'Umar, Sulayman Ramadan Muhammad. Al-Nizam Al-qanuni Li-khitabat Al-daman Al-masrafiyah: Dirasah Muqaranah Bi-al-fiqh Al-Islami. al-Qahirah: Jami'at al-Azhar, 2001.
MLA引文'Umar, Sulayman Ramadan Muhammad. Al-Nizam Al-qanuni Li-khitabat Al-daman Al-masrafiyah: Dirasah Muqaranah Bi-al-fiqh Al-Islami. Jami'at al-Azhar, 2001.
警告：這些引文格式不一定是100％准確.