↑S.H. Nasr, "Iran" in History of Humanity: From the Seventh to the Sixteenth Century, edited by Sigfried J. de Laet, M. A. Al-Bakhit, International Commission for a History of the Scientific and Cultural Development of Mankind History of mankind, L. Bazin, S. M. Cissco. Taylor & Francis US, 2000., str. 368.
↑Edward Granville Browne, "A Literary History of Persia", Published by Iranbooks, 1997. Originally published: 1902.
↑Concise Encyclopedia of Islam, C. Glasse, al-Junayd (str. 211.), Suhail Academy co.