APA (7th ed.) Citation

Fogelin, R. J., & Sinnott-Armstrong, W. (2001). Understanding Arguments: An introduction to informal logic (6. ed.). Harcourt College Publ.

Chicago Style (17th ed.) Citation

Fogelin, Robert J., and Walter Sinnott-Armstrong. Understanding Arguments: An Introduction to Informal Logic. 6. ed. Fort Worth [u.a.]: Harcourt College Publ, 2001.

MLA (9th ed.) Citation

Fogelin, Robert J., and Walter Sinnott-Armstrong. Understanding Arguments: An Introduction to Informal Logic. 6. ed. Harcourt College Publ, 2001.