APA (7th ed.) Citation

Hornby. (2005). Oxford advanced learner?s dictionary of current English (7th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Hornby. Oxford Advanced Learner?s Dictionary of Current English. 7th ed. New York: Oxford University Press, 2005.

MLA (8th ed.) Citation

Hornby. Oxford Advanced Learner?s Dictionary of Current English. 7th ed. Oxford University Press, 2005.