Pius XII, P. (1957). States of perfection: Address of His Holiness Pope Pius XII to the Second General Congress of the States of Perfection, December 12, 1957. National Catholic Welfare Conference.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Pius XII, Pope. States of Perfection: Address of His Holiness Pope Pius XII to the Second General Congress of the States of Perfection, December 12, 1957. Washington: National Catholic Welfare Conference, 1957.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Pius XII, Pope. States of Perfection: Address of His Holiness Pope Pius XII to the Second General Congress of the States of Perfection, December 12, 1957. National Catholic Welfare Conference, 1957.
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