al-Shafi'i, M. i. I. (2015). The Epistle on Legal Theory: A Translation of Al-Shafi'i's Risalah. New York University Press.
Chicago Style (17th ed.) Citational-Shafi'i, Muhammad ibn Idris. The Epistle on Legal Theory: A Translation of Al-Shafi'i's Risalah. New York, NY: New York University Press, 2015.
MLA (9th ed.) Citational-Shafi'i, Muhammad ibn Idris. The Epistle on Legal Theory: A Translation of Al-Shafi'i's Risalah. New York University Press, 2015.
Warning: These citations may not always be 100% accurate.