Hoffer, Jeffrey A. Modern systems analysis and design / Jeffrey A. Hoffer, Joey F. George, Joseph S. Valacich. - 6th ed. - Upper Saddle River, N.J. : Pearson Prentice Hall, c2011. - xxviii, 547 p. : ill. (some col ; 29 cm. ISBN: 9780136088219 (alk. paper) 013608821X (alk. paper) LCCN: 2009043559 Subjects--Topical Terms: System design.System analysis. Dewey Class. No.: 005.1/2