APA (7th ed.) Citation

Brodnitz, F. S. (1953). Keep your voice healthy: A guide to the intelligent use and care of the speaking and singing voice. Harper.

Chicago Style (17th ed.) Citation

Brodnitz, Friedrich S. Keep Your Voice Healthy: A Guide to the Intelligent Use and Care of the Speaking and Singing Voice. [Place of publication not identified]: Harper, 1953.

MLA (9th ed.) Citation

Brodnitz, Friedrich S. Keep Your Voice Healthy: A Guide to the Intelligent Use and Care of the Speaking and Singing Voice. Harper, 1953.