Cita APA (7th ed.)

Jahn, A. F. (2013). The singer's guide to complete health. Oxford University Press.

Cita Chicago (17th ed.)

Jahn, Anthony F. The Singer's Guide to Complete Health. New York: Oxford University Press, 2013.

Cita MLA (9th ed.)

Jahn, Anthony F. The Singer's Guide to Complete Health. Oxford University Press, 2013.