1.
Information Systems Success in the 21st Century
by Gupta, Uma G.
ISBN: 9780130108579
List Price: $133.33
3.
Information Systems: Success in the 21st Century
by Uma G. Gupta
ISBN: 9783540760757
List Price: $197.33
5.
Validating and Verifying Knowledge-Based Systems
by Gupta, Uma G.
ISBN: 9780818689956
List Price: $14.95