APA (7th ed.) Citation

Hobbs, M., & Starr Keddle, J. (2006). Commerce 1: Class CD. Oxford University Press.

Chicago Style (17th ed.) Citation

Hobbs, Martyn, and Julia Starr Keddle. Commerce 1: Class CD. New York: Oxford University Press, 2006.

MLA (9th ed.) Citation

Hobbs, Martyn, and Julia Starr Keddle. Commerce 1: Class CD. Oxford University Press, 2006.