Catholic Church. Pope (1903-1914 : Pius X) & McNaspy, C. J. (1950). The motu proprio of church music of Pope Pius X: A new translation and commentary. Gregorian Institute of America.
Chicago Style (17th ed.) CitationCatholic Church. Pope (1903-1914 : Pius X) and C. J. McNaspy. The Motu Proprio of Church Music of Pope Pius X: A New Translation and Commentary. Toledo: Gregorian Institute of America, 1950.
MLA (8th ed.) CitationCatholic Church. Pope (1903-1914 : Pius X) and C. J. McNaspy. The Motu Proprio of Church Music of Pope Pius X: A New Translation and Commentary. Gregorian Institute of America, 1950.
Warning: These citations may not always be 100% accurate.