Sundberg, J. (1987). The science of the singing voice. Northern Illinois University Press.
Cita Chicago (17th ed.)Sundberg, Johan. The Science of the Singing Voice. DeKalb, Ill: Northern Illinois University Press, 1987.
Cita MLA (9th ed.)Sundberg, Johan. The Science of the Singing Voice. Northern Illinois University Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.