Alty, J.L., author
NCC Publications, 1984
Buku Teks
edited by, Frederick Hayes-Roth, Donald A. Waterman and Douglas Lenat
Addison-Wesley, 1983
Buku Teks
edited by Barry G. Silverman
Addison-Wesley, 1987
Buku Teks
edited by Larry Kerschberg
The Benjamin Cumming , 1986
Buku Teks
Chapman and Hall , 1990
Buku Teks