APA
Sundberg J., . (1989). The science of the singing voice. Dekalb, Ill: Northern Illinois University Press.
Chicago
Sundberg Johan, . 1989. The science of the singing voice. Dekalb, Ill: Northern Illinois University Press.
Harvard
Sundberg J., . (1989). The science of the singing voice. Dekalb, Ill: Northern Illinois University Press.
MLA
Sundberg Johan, . The science of the singing voice. Dekalb, Ill: Northern Illinois University Press. 1989.