APA (7th ed.) Citation

Robertson, M., & Armstrong, R. (2001). Aaron Copland: A guide to research. Routledge.

Chicago Style (17th ed.) Citation

Robertson, Marta, and Robin Armstrong. Aaron Copland: A Guide to Research. New York: Routledge, 2001.

MLA (9th ed.) Citation

Robertson, Marta, and Robin Armstrong. Aaron Copland: A Guide to Research. Routledge, 2001.