Whitten, Jeffrey L. Systems analysis & design methods / Jeffrey L. Whitten - 2nd ed. - Homewood, IL : Irwin, 1989. - xxxii, 797 p. : ill. ; Includes bibliographical references. ISBN: 0256074933 Subjects--Topical Terms: System design.System analysis. LC Class. No.: QA76.9 / .S88W45 1989