edited by Hans-Georg Geissler, Stephen W. Link and James T. Townsend
Lawrence Erlbaum Associates, 1991
Buku Teks SO
Rumelhart, David E.
MIT Press, 1986
Buku Teks SO
B. Blackwell,, 1991
Buku Teks
Nicolis, John S.
World Scientific, 1991
Buku Teks
Bourne, Lyle E., Jr.
Prentice-Hall, 1986
Buku Teks