APA (7th ed.) Citation

Warren, H. (1994). Oxford learner's dictionary of English idioms. Oxford University Press.

Chicago Style (17th ed.) Citation

Warren, Helen. Oxford Learner's Dictionary of English Idioms. Oxford: Oxford University Press, 1994.

MLA (9th ed.) Citation

Warren, Helen. Oxford Learner's Dictionary of English Idioms. Oxford University Press, 1994.