APA (7th ed.) Citation

Roget, P. M., & Roget, S. R. (1990). Roget's thesaurus of English words and phrases. Portland House Distributed by Outlet Book Co.

Chicago Style (17th ed.) Citation

Roget, Peter Mark, and Samuel Romilly Roget. Roget's Thesaurus of English Words and Phrases. New York: Portland House Distributed by Outlet Book Co, 1990.

MLA (9th ed.) Citation

Roget, Peter Mark, and Samuel Romilly Roget. Roget's Thesaurus of English Words and Phrases. Portland House Distributed by Outlet Book Co, 1990.