Cita APA (7a ed.)

O'Collins, G. (2008). Catholicism: A very short introduction. Oxford University Press.

Cita Chicago Style (17a ed.)

O'Collins, Gerald. Catholicism: A Very Short Introduction. Oxford: Oxford University Press, 2008.

Cita MLA (9a ed.)

O'Collins, Gerald. Catholicism: A Very Short Introduction. Oxford University Press, 2008.