Gaya APA

O'Brien, D, J, &, S, T, A. (2003). Catholic social thought: The documentary heritage. . Maryknoll: Maryknoll Orbis Books.

Gaya MLA

O'Brien, David, J., &, Shannon,, Thomas, A.. "Catholic social thought: The documentary heritage. ". Maryknoll: Maryknoll Orbis Books, 2003. Buku.