Cita APA (7th ed.)

Appelman, D. R. (1967). The science of vocal pedagogy: Theory and applications. Indiana University Press.

Cita Chicago (17th ed.)

Appelman, Dudley Ralph. The Science of Vocal Pedagogy: Theory and Applications. Bloomington: Indiana University Press, 1967.

Cita MLA (9th ed.)

Appelman, Dudley Ralph. The Science of Vocal Pedagogy: Theory and Applications. Indiana University Press, 1967.