Hiley, David (1990). Chant. In Performance Practice: Music before 1600, Howard Mayer Brown and Stanley Sadie, eds., pp. 37-54. New York: W.W. Norton & Co. ISBN 978-0-393-02807-2
Hiley, David. Western Plainchant: A Handbook. Clarendon Press. 1995. ISBN 0-19-816572-2.
Mahrt, William P. (2000). Chant. In A Performer's Guide to Medieval Music, Ross Duffin, ed., pp. 1-22. Bloomington, IN: Indiana University Press. ISBN 978-0-253-33752-8
McKinnon, James (編). Antiquity and the Middle Ages. Prentice Hall. 1990. ISBN 0-13-036153-4.
Parrish, Carl. A Treasury of Early Music. Mineola, NY: Dover Publications, Inc. 1986. ISBN 0-486-41088-9.
Robinson, Ray (編). Choral Music. W.W. Norton & Co. 1978. ISBN 0-393-09062-0.
Wagner, Peter. (1911) Einführung in die Gregorianischen Melodien. Ein Handbuch der Choralwissenschaft. Leipzig: Breitkopf & Härtel.
Wilson, David. Music of the Middle Ages. Schirmer Books. 1990. ISBN 0-02-872951-X.
Geoffrey Chew and Richard Rastall: "Notation", Grove Music Online, ed. L. Macy (Accessed 27 June 2006), (subscription access) （頁面存檔備份，存於互聯網檔案館）
sites of abbeys and schola according to the method of Dom Gajard. Gregedit Gregorian Software[1] （頁面存檔備份，存於互聯網檔案館）
H. Bewerung: "Gregorian chant", Catholic Encyclopedia, [2] （頁面存檔備份，存於互聯網檔案館）
Joseph Dyer: "Roman Catholic Church Music", Section VI.1, Grove Music Online ed. L. Macy (Accessed 28 June 2006), (subscription access) （頁面存檔備份，存於互聯網檔案館）
David Hiley and Janka Szendrei: "Notation", Grove Music Online, ed. L. Macy (Accessed 12 June 2006), (subscription access) （頁面存檔備份，存於互聯網檔案館）
James W. McKinnon: "Christian Church, music of the early", Grove Music Online ed. L. Macy (Accessed 11 July 2006), (subscription access) （頁面存檔備份，存於互聯網檔案館）
