O''Brien, J. A. (1949). Why not be a saint?: Christ's call to all (7th printing.). The Queen's Work.
Cita Chicago Style (17a ed.)O''Brien, John A. Why Not Be a Saint?: Christ's Call to All. 7th printing. St. Louis (Misuri): The Queen's Work, 1949.
Cita MLA (9a ed.)O''Brien, John A. Why Not Be a Saint?: Christ's Call to All. 7th printing. The Queen's Work, 1949.
Precaución: Estas citas no son 100% exactas.