APA (7th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII) & Ellard, G. (1961). On the sacred liturgy: Encyclical letter, Mediator Dei (Nov. 20, 1947) of Pope Pius XII (Enl. and rev. ed.). America Press.

Chicago Style (17th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII) and Gerald Ellard. On the Sacred Liturgy: Encyclical Letter, Mediator Dei (Nov. 20, 1947) of Pope Pius XII. Enl. and rev. ed. New York: America Press, 1961.

MLA (8th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII) and Gerald Ellard. On the Sacred Liturgy: Encyclical Letter, Mediator Dei (Nov. 20, 1947) of Pope Pius XII. Enl. and rev. ed. America Press, 1961.