APA (7th ed.) Citation

Hornby, A. S., Deuter, M., Turnbull, J., & Bradbury, J. Oxford Advanced Learner's Dictionary of Current English (6th edition.).

Chicago Style (17th ed.) Citation

Hornby, Albert Sydney, Margaret Deuter, Joanna Turnbull, and Jennifer Bradbury. Oxford Advanced Learner's Dictionary of Current English. 6th edition.

MLA (8th ed.) Citation

Hornby, Albert Sydney, et al. Oxford Advanced Learner's Dictionary of Current English. 6th edition.