APA (7th ed.) Citation

HORNBY, A. (1972). Learner's Dictionary. Oxford University Press.

Chicago Style (17th ed.) Citation

HORNBY, A.S. Learner's Dictionary. Oxford University Press, 1972.

MLA (8th ed.) Citation

HORNBY, A.S. Learner's Dictionary. Oxford University Press, 1972.

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