Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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