Frans H. van Eemeren (2009). "The Study of Argumentation". In Andrea A. Lunsford; Kirt H. Wilson; Rosa A. Eberly (eds.). The SAGE handbook of rhetorical studies. SAGE. p. 117. ISBN978-1-4129-0950-1.
jstor.org
Hausman, Alan; Landesman, Charles; Seamon, Roger (2002). "Howard Kahane, 1928-2001". Proceedings and Addresses of the American Philosophical Association. 75 (5): 191–193. JSTOR3218569.
mcmaster.ca
humanities.mcmaster.ca
David Hitchcock, Informal logic 25 years later in Informal Logic at 25: Proceedings of the Windsor Conference (OSSA 2003)
