APA (7th ed.) Citation

HORNBY, A. S. (1973). The Advanced Learner's Dictionary of Current English.

Chicago Style (17th ed.) Citation

HORNBY, A. S. The Advanced Learner's Dictionary of Current English. 1973.

MLA (8th ed.) Citation

HORNBY, A. S. The Advanced Learner's Dictionary of Current English. 1973.

Warning: These citations may not always be 100% accurate.