Sinnott-Armstrong, W., & Fogeline, R. J. (2010). Understanding arguments: An introduction to informal logic (8th ed.). Belmont, Calif.: Wadsworth: Cengage Learning.
Chicago Style CitationSinnott-Armstrong, Walter, and Robert J. Fogeline. Understanding Arguments: An Introduction to Informal Logic. 8th ed. Belmont, Calif.: Wadsworth: Cengage Learning, 2010.
MLA CitationSinnott-Armstrong, Walter, and Robert J. Fogeline. Understanding Arguments: An Introduction to Informal Logic. 8th ed. Belmont, Calif.: Wadsworth: Cengage Learning, 2010.
Warning: These citations may not always be 100% accurate.