APA (7th ed.) Citation

Hobbs, M., & Keddle, J. S. (2006). Commerce 1: Student's book. Oxford University Press.

Chicago Style (17th ed.) Citation

Hobbs, Martyn, and Julia Starr Keddle. Commerce 1: Student's Book. Oxford: Oxford University Press, 2006.

MLA (8th ed.) Citation

Hobbs, Martyn, and Julia Starr Keddle. Commerce 1: Student's Book. Oxford University Press, 2006.