APA (7th ed.) Citation

Kelly, J. (1996). The Oxford dictionary of popes. O.U.P.

Chicago Style (17th ed.) Citation

Kelly, J.N.D. The Oxford Dictionary of Popes. New York: O.U.P, 1996.

MLA (9th ed.) Citation

Kelly, J.N.D. The Oxford Dictionary of Popes. O.U.P, 1996.