APA (7th ed.) Citation

Backus, J. (1969). The acoustical foundations of music. W. W. Norton.

Chicago Style (17th ed.) Citation

Backus, John. The Acoustical Foundations of Music. New York: W. W. Norton, 1969.

MLA (9th ed.) Citation

Backus, John. The Acoustical Foundations of Music. W. W. Norton, 1969.