al-Nizam al-qanuni li-khitabat al-daman al-masrafiyah : dirasah muqaranah bi-al-fiqh al-Islami - 'Umar, Sulayman Ramadan Muhammad (al-Iskandariyah : Dar al-al-Fikr al-Jami'i, 2009)
Originally presented as the author's thesis - Ph.D Jami'at al-Azhar, 2001
Keywords: Suretyship and guaranty (Islamic law); Letters of credit -- Egypt; Suretyship and guaranty -- Egypt