A cappella/Bibliography


 * Cain, Noble (1932) Choral Music and Its Practice: with Particular Reference to A Cappella Music. New York, N.Y.: M. Witmark & Sons. OCLC 20457235
 * Ferguson, Everett (1972) A Cappella Music in the Public Worship of the Church. Abilene, Texas: Biblical Research Press. OCLC 539868
 * Hostetler, Ann Elizabeth (2003) A Cappella: Mennonite Voices in Poetry. Iowa City: University of Iowa Press. ISBN 978-0-87745-859-3 (OCLC 51969011)
 * Ulrich, Bernhard; Foreman, Edward; and Seale, John W (2006) Concerning the Principles of Voice Training During the A Cappella Period and until the Beginning of Opera. Minneapolis, Minn.: Pro Musica Press. ISBN 978-1-88711-705-0 (OCLC 166481666)