APA (7th ed.) Citation

Hornby, A. (1989). Oxford advanced learner's dictionary of current: English. Univ. Pr.

Chicago Style (17th ed.) Citation

Hornby, A.S. Oxford Advanced Learner's Dictionary of Current: English. Oxford: Univ. Pr, 1989.

MLA (9th ed.) Citation

Hornby, A.S. Oxford Advanced Learner's Dictionary of Current: English. Univ. Pr, 1989.