APA (7th ed.) Citation

Sinnott-Armstrong, W., & Fogelin, R. J. (2010). Understanding arguments: An introduction to informal logic (8. ed., internat. student ed.). Wadsworth Cengage Learning.

Chicago Style (17th ed.) Citation

Sinnott-Armstrong, Walter, and Robert J. Fogelin. Understanding Arguments: An Introduction to Informal Logic. 8. ed., internat. student ed. Belmont, Calif: Wadsworth Cengage Learning, 2010.

MLA (9th ed.) Citation

Sinnott-Armstrong, Walter, and Robert J. Fogelin. Understanding Arguments: An Introduction to Informal Logic. 8. ed., internat. student ed. Wadsworth Cengage Learning, 2010.