APA (7th ed.) Citation

Surmani, A., Surmani, K. F., & Manus, M. (20). Alfred's essentials of music theory: A complete self-study course for all musicians. Alfred.

Chicago Style (17th ed.) Citation

Surmani, Andrew, Karen Farnum Surmani, and Morry Manus. Alfred's Essentials of Music Theory: A Complete Self-study Course for All Musicians. Alfred, 20.

MLA (8th ed.) Citation

Surmani, Andrew, et al. Alfred's Essentials of Music Theory: A Complete Self-study Course for All Musicians. Alfred, 20.