APA (7th ed.) Citation

Gordon, M. S., & Gordon, M. (2001). Islam (Rev. ed.). Facts On File.

Chicago Style (17th ed.) Citation

Gordon, Matthew S., and Matthew Gordon. Islam. Rev. ed. New York, NY: Facts On File, 2001.

MLA (8th ed.) Citation

Gordon, Matthew S., and Matthew Gordon. Islam. Rev. ed. Facts On File, 2001.