Runes, Dagobert D.
A dictionary of thought : from my writings and of my evenings
Philosophical Library, 1959
 Buku Referensi
Warburton, Nigel, 1962-
Philosophy the basic / Warburton, Nigel
Routledge, 1995
 Buku Teks
Moore, Brookee Noel
Critical thinking
McGraw-Hill, 2015
 Buku Teks
Moore, Brooke Noel
Critical thinking
McGraw-Hill, 2004
 Buku Teks
Verlinden, Jay
Critical Thinking and Everyday Argument
Wadsworth/Thomson Learning, 2005
 Buku Teks