Peters, R., Abouseif, Doris Behrens, Powers, D.S., Carmona, A., Layish, A., Lambton, Ann K.S., Deguilhem, Randi, McChesney, R.D., Kozlowski, G.C., M.B. Hooker et al (2012). «Waḳf». Στο: P. Bearman, Th. Bianquis, C.E. Bosworth, E. van Donzel, W.P. Heinrichs, επιμ. Encyclopaedia of Islam (2nd έκδοση). Brill. http://referenceworks.brillonline.com/entries/encyclopaedia-of-islam-2/wakf-COM_1333. Ανακτήθηκε στις 2017-12-21.