Stern 1950, p. 24. Stern, S. M. (1950). "The Epistle of the Fatimid Caliph al-Āmir (al-Hidāya al-Āmiriyya): Its Date and Its Purpose". The Journal of the Royal Asiatic Society of Great Britain and Ireland. 82 (1): 20–31. doi:10.1017/S0035869X00103284. JSTOR25222370.
Stern 1950, pp. 25–29. Stern, S. M. (1950). "The Epistle of the Fatimid Caliph al-Āmir (al-Hidāya al-Āmiriyya): Its Date and Its Purpose". The Journal of the Royal Asiatic Society of Great Britain and Ireland. 82 (1): 20–31. doi:10.1017/S0035869X00103284. JSTOR25222370.
Stern 1951, p. 194. Stern, S. M. (1951). "The Succession to the Fatimid Imam al-Āmir, the Claims of the Later Fatimids to the Imamate, and the Rise of Ṭayyibī Ismailism". Oriens. 4 (2): 193–255. doi:10.2307/1579511. JSTOR1579511.
Stern 1950, p. 20. Stern, S. M. (1950). "The Epistle of the Fatimid Caliph al-Āmir (al-Hidāya al-Āmiriyya): Its Date and Its Purpose". The Journal of the Royal Asiatic Society of Great Britain and Ireland. 82 (1): 20–31. doi:10.1017/S0035869X00103284. JSTOR25222370.
Andani 2016, pp. 273–274. Andani, Khalil (2016). "A Survey of Ismaili Studies Part 2: Post-Fatimid and Modern Ismailism". Religion Compass. 10 (11): 269–282. doi:10.1111/rec3.12222.
Stern 1950, p. 24. Stern, S. M. (1950). "The Epistle of the Fatimid Caliph al-Āmir (al-Hidāya al-Āmiriyya): Its Date and Its Purpose". The Journal of the Royal Asiatic Society of Great Britain and Ireland. 82 (1): 20–31. doi:10.1017/S0035869X00103284. JSTOR25222370.
Stern 1950, pp. 25–29. Stern, S. M. (1950). "The Epistle of the Fatimid Caliph al-Āmir (al-Hidāya al-Āmiriyya): Its Date and Its Purpose". The Journal of the Royal Asiatic Society of Great Britain and Ireland. 82 (1): 20–31. doi:10.1017/S0035869X00103284. JSTOR25222370.
Stern 1951, p. 194. Stern, S. M. (1951). "The Succession to the Fatimid Imam al-Āmir, the Claims of the Later Fatimids to the Imamate, and the Rise of Ṭayyibī Ismailism". Oriens. 4 (2): 193–255. doi:10.2307/1579511. JSTOR1579511.
Stern 1950, p. 20. Stern, S. M. (1950). "The Epistle of the Fatimid Caliph al-Āmir (al-Hidāya al-Āmiriyya): Its Date and Its Purpose". The Journal of the Royal Asiatic Society of Great Britain and Ireland. 82 (1): 20–31. doi:10.1017/S0035869X00103284. JSTOR25222370.