Sansom, R. (2023). Vocal traditions: Training in the performing arts. Routledge.
Chicago-referens (17:e uppl.)Sansom, Rockford. Vocal Traditions: Training in the Performing Arts. New York: Routledge, 2023.
MLA-referens (9:e uppl.)Sansom, Rockford. Vocal Traditions: Training in the Performing Arts. Routledge, 2023.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.