APA (7th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII). (1967). Christian worship: Encyclical letter (Mediator Dei) of His Holiness Pius XII... on the sacred liturgy. Catholic Truth Society.

Chicago Style (17th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII). Christian Worship: Encyclical Letter (Mediator Dei) of His Holiness Pius XII... on the Sacred Liturgy. London: Catholic Truth Society, 1967.

MLA (8th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII). Christian Worship: Encyclical Letter (Mediator Dei) of His Holiness Pius XII... on the Sacred Liturgy. Catholic Truth Society, 1967.