Cita APA

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.

Citación estilo Chicago

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.

Cita MLA

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.