APA (7th ed.) Citation

Helleberg, M. M. (1980). Tour hearing loss: How to break the sound barrier. Nelson-Hall.

Chicago Style (17th ed.) Citation

Helleberg, Marilyn M. Tour Hearing Loss: How to Break the Sound Barrier. Chicago: Nelson-Hall, 1980.

MLA (9th ed.) Citation

Helleberg, Marilyn M. Tour Hearing Loss: How to Break the Sound Barrier. Nelson-Hall, 1980.