O'Hara, E. V. (1955). The lay apostolate: According to the mind of Pope Pius X. Confraternity Publications.
Chicago-viite (17. p.)O'Hara, Edwin V. The Lay Apostolate: According to the Mind of Pope Pius X. Paterson, N.J.: Confraternity Publications, 1955.
MLA-viite (8. p.)O'Hara, Edwin V. The Lay Apostolate: According to the Mind of Pope Pius X. Confraternity Publications, 1955.
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