Open Software Foundation
OSF/Motif programmer's reference, revision 1.1 / Open Software Foundation
Prentice-Hall, 1991
Buku Referensi
OSF/motif programmer's guide : revision 1.1
Prentice-Hall, 1991
Buku Teks
Jones, Edward
Using dBASE IV 1.1
Osborne McGraw-Hill , 1990
Buku Teks
Burton, Sharon
Software solutions: concepts and applications
Houghton-Mifflin, 1992
Buku Teks
Wordstar professional release 5: the business standard in word processing software
MicroPro International Corporation , 1988
Buku Teks