School of Theology and Seminary Faculty Publications
Gregorian Chant and Polyphony
Liturgy and Worship
Ruff, Anthony. “Gregorian Chant and Polyphony.” In So You Want to Sing Sacred Music? 23-54. New York: Rowman & Littlefield, 2017
Find this book in the library: https://CSBSJU.on.worldcat.org/oclc/957656416.