Tham khảo Qal'at Ja'bar

  1. Sourdel, D. (2010). “ḎJabar or Ḳalat ḎJabar”. Trong Bearman, P.; Bianquis, Th.; Bosworth, C.E.; van Donzel, E.; Heinrichs, W.P. (biên tập). Encyclopaedia of Islam, Second Edition. Leiden: Brill Online. OCLC 624382576.
  2. Musil, A. (1927). The Middle Euphrates. A topographical itinerary. Oriental Explorations and Studies. 3. New York: American Geographical Society. tr. 94–95. OCLC 1458654.