Cita APA (7a ed.)

Kelly, J. (1986). The Oxford dictionary of Popes. Oxford University Press.

Cita Chicago Style (17a ed.)

Kelly, J.N.D. The Oxford Dictionary of Popes. Oxford [etc.]: Oxford University Press, 1986.

Cita MLA (9a ed.)

Kelly, J.N.D. The Oxford Dictionary of Popes. Oxford University Press, 1986.