The Computer users year book 1989 : services, volume 2
VNU Business Publications, 1989
Buku Referensi
The Computer users year book 1989 : installations, volume 3
VNU Business Publications, 1989
Buku Referensi
The Computer users year book 1989 : equipment, volume 1
VNU Business Publications, 1989
Buku Referensi
Peterson's guide to four-year colleges 1997
Peterson's, 1996
Buku Referensi
Sorenson, Ritch
Business and management communication : a guide book
Prentice-Hall, 2001
Buku Referensi