APA (7th ed.) Citation

Hertel, R. A. (2008). 344 exercises for singers: A linguistic approach to clear diction and flowing tone. Derryl Singley Publishing and Graphics.

Chicago Style (17th ed.) Citation

Hertel, Richard A. 344 Exercises for Singers: A Linguistic Approach to Clear Diction and Flowing Tone. Savoy, IL: Derryl Singley Publishing and Graphics, 2008.

MLA (9th ed.) Citation

Hertel, Richard A. 344 Exercises for Singers: A Linguistic Approach to Clear Diction and Flowing Tone. Derryl Singley Publishing and Graphics, 2008.