APA (7th ed.) Citation

Duckworth, W., & Brown, E. (1978). Theoretical foundations of music. Wadsworth.

Chicago Style (17th ed.) Citation

Duckworth, William, and Edward Brown. Theoretical Foundations of Music. Belmont, Cal: Wadsworth, 1978.

MLA (9th ed.) Citation

Duckworth, William, and Edward Brown. Theoretical Foundations of Music. Wadsworth, 1978.

Warning: These citations may not always be 100% accurate.