The Encyclopaedia of Islam

MLA

Gibb, H. A. R, and Johannes Hendrik Kramers. The Encyclopaedia of Islam. New edition / prepared by a number of leading orientalists Leiden: Brill, 1983.

APA

Gibb, H. A. R, & Kramers, J. Hendrik. (1983). The Encyclopaedia of Islam. New edition / prepared by a number of leading orientalists Leiden: Brill.

Chicago

Gibb, H. A. R. ed., and Johannes Hendrik Kramers ed. The Encyclopaedia of Islam. New edition / prepared by a number of leading orientalists Leiden: Brill, 1983.