APA Edition Citation

Cowie, A. S., & Hornby, A. S. (1989). Oxford advanced learner`s dictionary of current English (Ed.4.).

Chicago Edition Citation

Cowie, A S., and A S. Hornby. Oxford Advanced Learner`s Dictionary of Current English. Ed.4. Oxford, OUP, 1989.

MLA Edition Citation

Cowie, A S., and A S. Hornby. Oxford Advanced Learner`s Dictionary of Current English. Ed.4. 1989.