Cita APA (7a ed.)

Coffin, B. (1980). Coffin's overtones of bel canto: Phonetic basis of artistic singing with 100 chromatic vowel-chart exercises / by Berton Coffin. Scarecrow Press.

Cita Chicago Style (17a ed.)

Coffin, Berton. Coffin's Overtones of Bel Canto: Phonetic Basis of Artistic Singing with 100 Chromatic Vowel-chart Exercises / by Berton Coffin. Metuchen, N.J.: Scarecrow Press, 1980.

Cita MLA (8a ed.)

Coffin, Berton. Coffin's Overtones of Bel Canto: Phonetic Basis of Artistic Singing with 100 Chromatic Vowel-chart Exercises / by Berton Coffin. Scarecrow Press, 1980.