1. Abū al-Fawāris, Aḥmad ibn Yaʿqūb. 1977. al-Risāla fī’l-imāma. Trans. Sāmī Nasīb Makārim. The Political Doctrine of the Ismāʿīlīs. Delmar: Caravan Books.
2. Amir-Moezzi. 2013. Ghadīr Khumm. In Encyclopedia of Islam Three, eds. Kate Fleet, Gudrun Krämer, Denis Matringe, John Nawas, and Everett Rowson. Brill. http://referenceworks.brillonline.com.myaccess.library.utoronto.ca/ . Accessed 13 May 2016.
3. Amoretti, B. Scarcia. 1972. La Risālat al-imāma di Naṣīr al-Dīn Ṭūsī. Rivista degli studi orientali 47 (3/4): 247–276.
4. Āmulī, Ḥaydar ibn ʿAlī. 1969. Jāmiʿ al-asrār wa manbaʿ al-anwār, eds. Henry Corbin and Ismail Othmān Yaḥyā. Tehran: Anīstītū-i Īrān va Faransah.
5. Baffioni, Carmela. 2006. History, Language and Ideology in the Ikhwān al-Ṣafā’s View of the Imamate. In Authority, Privacy and Public Order in Islam: Proceedings of the 22nd Congress of L’Union Européenne des Arabisants et Islamisants, eds. B. Michalak-Pikulska and A. Pikulski, 17–28. Cracow: Peeters.