APA (7th ed.) Citation

Avery, E., Dorsey, J. O., & Sickels, V. A. (1928). First principles of speech training. Appleton.

Chicago Style (17th ed.) Citation

Avery, Elizabeth, Jane Oliver Dorsey, and Vera Abigail Sickels. First Principles of Speech Training. New York: Appleton, 1928.

MLA (9th ed.) Citation

Avery, Elizabeth, et al. First Principles of Speech Training. Appleton, 1928.