APA (7th ed.) Citation

Poole, Bradbery, Lea, & Warren. (2008). Oxford learner's thesaurus: A dictionary of synonyms. Oxford University Press.

Chicago Style (17th ed.) Citation

Poole, Bradbery, Lea, and Warren. Oxford Learner's Thesaurus: A Dictionary of Synonyms. Oxford: Oxford University Press, 2008.

MLA (8th ed.) Citation

Poole, et al. Oxford Learner's Thesaurus: A Dictionary of Synonyms. Oxford University Press, 2008.