Sundberg, J. (1987). The science of the singing voice. Northern Illinois University Press.
Čikaški stil citiranja (17. izdanje)Sundberg, Johan. The Science of the Singing Voice. DeKalb, Ill: Northern Illinois University Press, 1987.
MLA način citiranja (9. izdanje)Sundberg, Johan. The Science of the Singing Voice. Northern Illinois University Press, 1987.
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