Waterman, Donald A., author
Addison-Wesley Publishing, 1986
Buku Referensi
Jorgensen, Carolyn, author
Brandy, 1990
Buku Teks
Sherman, Kenneth, author
Reston Publishing company, 1981
Buku Teks
edited by Ray Sarch
McGraw-Hill, 1990
Buku Referensi
edited by Bruce G. Buchanan and Edward H. Shortliffe
Addison-Wesley, 1984
Buku Teks