APA (7th ed.) Citation

Fogelin, R. J. (1982). Understanding arguments: An introduction to informal logic (2. ed.). Harcourt.

Chicago Style (17th ed.) Citation

Fogelin, Robert J. Understanding Arguments: An Introduction to Informal Logic. 2. ed. New York: Harcourt, 1982.

MLA (9th ed.) Citation

Fogelin, Robert J. Understanding Arguments: An Introduction to Informal Logic. 2. ed. Harcourt, 1982.