Christy, V. A., & Paton, J. G. (1991). Expressive singing song antholgy (3rd ed., medium voice ed.). W. C. Brown.
Chicago Style aipamenaChristy, Van A., and John Glenn Paton. Expressive Singing Song Antholgy. 3rd ed., medium voice ed. Dubuque: W. C. Brown, 1991.
MLA aipamenaChristy, Van A., and John Glenn Paton. Expressive Singing Song Antholgy. 3rd ed., medium voice ed. W. C. Brown, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.