APA (7th ed.) Citation

Hobbs M. Martyn & Keddle J. S. Julia Star. (2011). Commerce 1: Student's Book. Oxford, Oxford University Press, 2011.

Chicago Style (17th ed.) Citation

Hobbs M. Martyn and Keddle J. S. Julia Star. Commerce 1: Student's Book. Oxford, Oxford University Press, 2011, 2011.

MLA (9th ed.) Citation

Hobbs M. Martyn and Keddle J. S. Julia Star. Commerce 1: Student's Book. Oxford, Oxford University Press, 2011, 2011.