1. al-Azami, Muhammad Mustafa. 2011. The History of the Qur’anic Text: From Revelation to Compilation, a Comparative Study with the Old and New Testaments. 2nd ed. Malaysia: Al-Qalam Publishing; Islamic Book Trust.
2. Al-Imam, Ahmad Ali. 2007. Variant Readings of the Quran: A Critical Study of Their Historical and Linguistic Origins. Herndon, VA: International Institute of Islamic Thought.
3. Allison, Anthony. 2013. Love, Law, and Reason in the Thought of Al-Ghazali and Aquinas. PhD thesis, University of Glasgow.
4. Allison, James. n.d. Is Christianity Part of English Common Law. The Constitutional Principle: Separation of Church and State. http://candst.tripod.com/joestor4.htm.
5. al-Maʻarrī, Abū al-ʻAlāʼ. 1943 [c. 1033]. Risalat ul ghufran: A Divine Comedy. Ed. Kāmil Kīlānī. Cairo: al-Maaref Print. and Pub. House.