Burch, John G. Information systems : theory and practice / J. Burch, G. Grudnitski. - 5th ed. - New York : Wiley, c1989. - xvi, 921 p. : ill. ; 25 cm. - Wiley series in computing and information processing . Includes bibliographies and index. ISBN: 0-471-61293-6 Subjects--Topical Terms: Management information systems.