McGonagle, John J. Outsmarting the competition : practical approaches to finding and using competitive information / John J. McGonagle and Carolyn M. Vella. - Naperville, Ill. : Sourcebooks, 1990. - xii, 388 p. : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 0942061063 Subjects--Topical Terms: Business intelligence.Competition.