Cita APA (7a ed.)

Kelly, J. N. D. (1987). The Oxford dictionary of popes. University Press.

Cita Chicago Style (17a ed.)

Kelly, J. N. D. The Oxford Dictionary of Popes. Oxford [etc.]: University Press, 1987.

Cita MLA (9a ed.)

Kelly, J. N. D. The Oxford Dictionary of Popes. University Press, 1987.