Tham khảo Suy tàn của Phật giáo ở tiểu lục địa Ấn Độ

  1. Akira Hirakawa; Paul Groner (1993). A History of Indian Buddhism: From Śākyamuni to Early Mahāyāna. Motilal Banarsidass. tr. 227–240. ISBN 978-81-208-0955-0
  2. Damien Keown (2004). A Dictionary of Buddhism. Oxford University Press. tr. 208–209. ISBN 978-0-19-157917-2
  3. Fogelin, Lars, An Archaeological History of Indian Buddhism, Oxford University Press, p. 218.
  4. Wendy Doniger (1999). Merriam-Webster's Encyclopedia of World Religions. Merriam-Webster. tr. 155–157. ISBN 978-0-87779-044-0.  Đã bỏ qua tham số không rõ |url-access= (trợ giúp)
  5. Hartmut Scharfe (2002). Handbook of Oriental Studies. BRILL. tr. 150. ISBN 90-04-12556-6. Nalanda, together with the colleges at Vikramasila and Odantapuri, suffered gravely during the conquest of Bihar by the Muslim general Muhammad Bhakhtiyar Khalji between A.D. 1197 and 1206, and many monks were killed or forced to flee. 
  6. Religion population totals in 2010 by Country Pew Research, Washington DC (2012)