APA (7e ed.) Bronvermelding

Parkin, K. (1969). Ideal voice and speech training: A book of exercises (Rev., with additional material.). S. French.

Chicago (17e ed.) Bronvermelding

Parkin, Ken. Ideal Voice and Speech Training: A Book of Exercises. Rev., with additional material. London ; New York: S. French, 1969.

MLA (9e ed.) Bronvermelding

Parkin, Ken. Ideal Voice and Speech Training: A Book of Exercises. Rev., with additional material. S. French, 1969.