APA (7th ed.) Citation

Wentzel, W. C. (2001). Samuel Barber: A guide to research. Routledge.

Chicago Style (17th ed.) Citation

Wentzel, Wayne C. Samuel Barber: A Guide to Research. New York: Routledge, 2001.

MLA (9th ed.) Citation

Wentzel, Wayne C. Samuel Barber: A Guide to Research. Routledge, 2001.