Sawyer, Brian, author
Paperback Software International, 1989
Buku Teks
Siddall, James N., author
Marcel Dekker, 1990
Buku Teks
Ferdy Budiman Madian, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1991
UI - Tesis (Membership)
edited by Bruce G. Buchanan and Edward H. Shortliffe
Addison-Wesley, 1984
Buku Teks
edited by Adrian Walker
Addison-Wesley, 1987
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