Boole, George (1958). An Investigation of The Laws of Thought On Which Are Founded the Mathematical Theories of Logic and Probability. New York: Dover Publications, Inc. ISBN 0486600289 (This text is also available in free eText form here: http://www.gutenberg.org/etext/15114)
Brock, Bernard & Scott, Robert (1980) Methods of Rhetorical Criticism: A Twentieth-Century Perspective (2nd ed.). Detroit: Wayne State University Press ISBN 0060458429
Carnap, Rudolf (1958). Introduction to Symbolic Logic and Its Applications. New York: Dover Publications, Inc. ISBN 0486604535
Copi, Irving (2005) Introduction to Logic (12th ed.). Printice Hall ISBN 0131332759
Polya, G. (1971) How To Solve It (Reissue ed.). Princeton University Press ISBN 0691080976
Dauer, Francis Watanabe (1996) Critical Thinking: An Introduction to Reasoning. New York: Barnes and Noble ISBN 0760701377
Zarefsky, David (2005). Argumentation: The Study of Effective Reasoning [Course]. Chantilly, VA: The Teaching Company Limited Partnership
Hall, James (2005). Tools of Thinking: Understanding th World Trough Experience and Reason [Course]. Chantilly, VA: The Teaching Company Limited Partnership
