Dyfyniad APA

Behrman, A., & Haskell, J. (2013). Exercise of voice therapy (2nd ed.). Plural Publishing.

Dyfyniad Arddull Chicago

Behrman, Alison, and John Haskell. Exercise of Voice Therapy. 2nd ed. San Diego, CA: Plural Publishing, 2013.

Dyfyniad MLA

Behrman, Alison, and John Haskell. Exercise of Voice Therapy. 2nd ed. Plural Publishing, 2013.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.