APA (7th ed.) Citation

Hornby, A. S. (2005). Oxford Advanced Learner's Compass. Oxford University Press.

Chicago Style (17th ed.) Citation

Hornby, A. S. Oxford Advanced Learner's Compass. [Oxford]: Oxford University Press, 2005.

MLA (9th ed.) Citation

Hornby, A. S. Oxford Advanced Learner's Compass. Oxford University Press, 2005.