Halpern, Diane F.
Thought and Knowledge : an introduction to critical thinking
Lawrence Erlbaum Associates, Publishers, 1996
 Buku Teks
Growth of ideas knowledge thought imagination
Responsive Environments Corporation , 1968
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Machine intelligence 12: toward an automated logic of human thought
edited by J.E. Hayes; D. Michie; E. Tyugu
Oxford University Press , 1991
 Buku Teks
Chalmers, David J.
The conscious mind: in search of a theory of conscious experience
Department of philosophy University of California, 1995
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Murray, Les A.
Conscious & verbal / Murray
Carcanet, 1999
 Buku Teks