Ward, J. B. (1923). Gregorian chant: According to the principles of Dom André Mocquereau of Solesmes. The Catholic Education Press.
Lua i Stíl Chicago (17ú heag.)Ward, Justine Bayard. Gregorian Chant: According to the Principles of Dom André Mocquereau of Solesmes. Washington, D. C.: The Catholic Education Press, 1923.
Lua MLA (8ú heag.)Ward, Justine Bayard. Gregorian Chant: According to the Principles of Dom André Mocquereau of Solesmes. The Catholic Education Press, 1923.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.