APA (7e ed.) Bronvermelding

Walters, R. (2000). Mezzo-Soprano, Belter (Rev. ed.). Hal Leonard.

Chicago (17e ed.) Bronvermelding

Walters, Richard. Mezzo-Soprano, Belter. Rev. ed. Milwaukee, Wis.: Hal Leonard, 2000.

MLA (8e ed.) Bronvermelding

Walters, Richard. Mezzo-Soprano, Belter. Rev. ed. Hal Leonard, 2000.