Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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