APA (7th ed.) Citation

Humphreys, R. S. (1991). Islamic history: A framework for inquiry (Rev. ed.). I. B. Tauris.

Chicago Style (17th ed.) Citation

Humphreys, R. Stephen. Islamic History: A Framework for Inquiry. Rev. ed. London: I. B. Tauris, 1991.

MLA (9th ed.) Citation

Humphreys, R. Stephen. Islamic History: A Framework for Inquiry. Rev. ed. I. B. Tauris, 1991.