APA Citation

Roget, P. M. (1991). Roget's Thesaurus. Project Gutenberg.

Chicago Style Citation

Roget, Peter Mark. Roget's Thesaurus. Project Gutenberg, 1991.

MLA Citation

Roget, Peter Mark. Roget's Thesaurus. Project Gutenberg, 1991.

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