Catholic Church. Pope (1939-1958 : Pius XII), Pius XII, P., & Sheehan, S. G. (1948). Encyclical letter of his holiness Pius XII on the sacred liturgy. National Catholic Welfare Conference.
Chicago Style (17th ed.) CitationCatholic Church. Pope (1939-1958 : Pius XII), Pope Pius XII, and Shawn G. Sheehan. Encyclical Letter of His Holiness Pius XII on the Sacred Liturgy. Washington, D.C.: National Catholic Welfare Conference, 1948.
MLA (8th ed.) CitationCatholic Church. Pope (1939-1958 : Pius XII), et al. Encyclical Letter of His Holiness Pius XII on the Sacred Liturgy. National Catholic Welfare Conference, 1948.
Warning: These citations may not always be 100% accurate.