APA (7th ed.) Citation

Hagen, S. A., & Grogan, P. E. (1992). Sound advantage: A pronunciation book. Prentice Hall Regents.

Chicago Style (17th ed.) Citation

Hagen, Stacy A., and Patricia E. Grogan. Sound Advantage: A Pronunciation Book. Englewood Cliffs, N.J: Prentice Hall Regents, 1992.

MLA (9th ed.) Citation

Hagen, Stacy A., and Patricia E. Grogan. Sound Advantage: A Pronunciation Book. Prentice Hall Regents, 1992.