APA (7th ed.) Citation

Warren Robert Penn. (1949). Modern Rhetoric. Harcourt Brace and World inc.

Chicago Style (17th ed.) Citation

Warren Robert Penn. Modern Rhetoric. New York: Harcourt Brace and World inc, 1949.

MLA (9th ed.) Citation

Warren Robert Penn. Modern Rhetoric. Harcourt Brace and World inc, 1949.

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