Whitten, Jeffrey L.. Systems analysis and design methods / Jeffery L. Whitten and Lonnie D. Bentley. - 4th ed / . - New Delhi : Galgotia Publishers , 1999. - xxii,724p. : ill.,figs. ; 28cm . NULL ISBN: 8175152591 Rs. 275.00 Subjects--Index Terms: SYSTEM ANALYSIS Dewey Class. No.: 004.338 / WHI/S