Howard, B. (1975). Fundamentals of music theory: A program (2nd edition.). Harcourt Brace Jovanovich.
Lua i Stíl Chicago (17ú heag.)Howard, Bertrand. Fundamentals of Music Theory: A Program. 2nd edition. New York: Harcourt Brace Jovanovich, 1975.
Lua MLA (9ú heag.)Howard, Bertrand. Fundamentals of Music Theory: A Program. 2nd edition. Harcourt Brace Jovanovich, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.