Bourne, Lyle E., Jr.
Prentice-Hall, 1986
Buku Teks
B. Blackwell,, 1991
Buku Teks
Rumelhart, David E.
MIT Press, 1986
Buku Teks
Lawrence Erlbaum Associates , 1991
Buku Teks
edited by David J. Cole, James H. Fetzer, Terry L. Rankin
Kluwer Academic Publishers , 1990
Buku Teks