Quercia, Valerie
X window system user's guide / by Valerie Quercia and Tim O?Reilly
O`Reilly and Associates, 1993
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Brown, J. Robert
X Window programming from scratch
Que, 2000
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Bowles, Kenneth
Beginner's guide for the UCSD PASCAL system
Byte Books, 1980
 Buku Teks SO
Ignizio, James P.
Introduction to expert systems: the development and implementation of rule-based expert systems
Prentice-Hall, 1991
 Buku Teks SO
Open Software Foundation
OSF/Motif programmer's reference, revision 1.1 / Open Software Foundation
Prentice-Hall, 1991
 Buku Referensi