Thuis, S. (1952). Gregorian chant: A barometer of religious fervor in the Catholic Church. Grail Publication.
Cita Chicago Style (17a ed.)Thuis, Stephen. Gregorian Chant: A Barometer of Religious Fervor in the Catholic Church. St. Meinrad, Ind.: Grail Publication, 1952.
Cita MLA (8a ed.)Thuis, Stephen. Gregorian Chant: A Barometer of Religious Fervor in the Catholic Church. Grail Publication, 1952.
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