Cita APA (7a ed.)

O'Neill, W. (2021). Catholic social teaching: A user's guide. Orbis Books.

Cita Chicago Style (17a ed.)

O'Neill, William. Catholic Social Teaching: A User's Guide. New York: Orbis Books, 2021.

Cita MLA (9a ed.)

O'Neill, William. Catholic Social Teaching: A User's Guide. Orbis Books, 2021.