APA (7th ed.) Citation

Hornby A S. (2015). Oxford Advanced Learner's Dictionary of Current English (9th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Hornby A S. Oxford Advanced Learner's Dictionary of Current English. 9th ed. Oxford: Oxford University Press, 2015.

MLA (9th ed.) Citation

Hornby A S. Oxford Advanced Learner's Dictionary of Current English. 9th ed. Oxford University Press, 2015.