APA (7th ed.) Citation

Chapman, R. L., & Roget, P. M. (1911). Roget's international thesaurus. Harper & Row.

Chicago Style (17th ed.) Citation

Chapman, Robert L., and Peter Mark Roget. Roget's International Thesaurus. New York: Harper & Row, 1911.

MLA (9th ed.) Citation

Chapman, Robert L., and Peter Mark Roget. Roget's International Thesaurus. Harper & Row, 1911.