Sundberg, J. (1987). The science of the singing voice. Northern Illinois University Press.
Lua i Stíl Chicago (17ú heag.)Sundberg, Johan. The Science of the Singing Voice. DeKalb, Ill: Northern Illinois University Press, 1987.
Lua MLA (9ú heag.)Sundberg, Johan. The Science of the Singing Voice. Northern Illinois University Press, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.