O'Brien, J. A. (1943). Converts: How to win them. Our Sunday Visitor Press.
Chicago Style aipamenaO'Brien, John A. Converts: How to Win Them. Huntington, Ind.: Our Sunday Visitor Press, 1943.
MLA aipamenaO'Brien, John A. Converts: How to Win Them. Our Sunday Visitor Press, 1943.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.