<WHITTEN, J. L. a. Systems analysis and design methods. Irwin.
Chicago Style (17th ed.) Citation<WHITTEN, Jeffery L at.al.>. Systems Analysis and Design Methods. Irwin.
MLA (8th ed.) Citation<WHITTEN, Jeffery L at.al.>. Systems Analysis and Design Methods. Irwin.
Warning: These citations may not always be 100% accurate.