MLA

Hobbs, Martyn, and Julia Star Keddle. Commerce : Student's Book. Oxford: Oxford University Press, 2016.

APA

Hobbs, M., & Keddle, J. Star. (2016). Commerce : student's book. Oxford: Oxford University Press.

Chicago

Hobbs, Martyn, and Julia Star Keddle. Commerce: Student's Book. Oxford: Oxford University Press, 2016.