APA (7th ed.) Citation

Duckworth, W., & Brown, E. (1987). Theoretical foundations of music (5. print.). Wadsworth.

Chicago Style (17th ed.) Citation

Duckworth, William, and Edward Brown. Theoretical Foundations of Music. 5. print. Belmont, Cal: Wadsworth, 1987.

MLA (9th ed.) Citation

Duckworth, William, and Edward Brown. Theoretical Foundations of Music. 5. print. Wadsworth, 1987.