Jacobs, A. (1963). Choral music. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Jacobs, Arthur. Choral Music. Londres: Penguin Books, 1963.
Lua MLA (9ú heag.)Jacobs, Arthur. Choral Music. Penguin Books, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.