Cita APA (7a ed.)

Boone, D. R. (1997). Is your voice telling on youn: How to find and use your natural voice (2nd ed.). Singular Pub. Group.

Cita Chicago Style (17a ed.)

Boone, Daniel R. Is Your Voice Telling on Youn: How to Find and Use Your Natural Voice. 2nd ed. San Diego, Calif: Singular Pub. Group, 1997.

Cita MLA (9a ed.)

Boone, Daniel R. Is Your Voice Telling on Youn: How to Find and Use Your Natural Voice. 2nd ed. Singular Pub. Group, 1997.