APA (7th ed.) Citation

Fogelin, R. J., & Sinnott-Armstrong, W. (1997). Understanding arguments: An introduction to informal logic (5. ed.). Harcourt, Brace.

Chicago Style (17th ed.) Citation

Fogelin, Robert J., and Walter Sinnott-Armstrong. Understanding Arguments: An Introduction to Informal Logic. 5. ed. Fort Worth [u.a.]: Harcourt, Brace, 1997.

MLA (9th ed.) Citation

Fogelin, Robert J., and Walter Sinnott-Armstrong. Understanding Arguments: An Introduction to Informal Logic. 5. ed. Harcourt, Brace, 1997.