Sansom, R. (2023). Vocal traditions: Training in the performing arts. Routledge.
Lua i Stíl Chicago (17ú heag.)Sansom, Rockford. Vocal Traditions: Training in the Performing Arts. New York: Routledge, 2023.
Lua MLA (9ú heag.)Sansom, Rockford. Vocal Traditions: Training in the Performing Arts. Routledge, 2023.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.