Engel, James F. Promotional strategy : managing the marketing communications process / by James F. Engel, Martin R. Warshaw, Thomas C. Kinnear. - 7th ed. - Homewood, Ill. : Irwin, 1991. - xxv, 753 p. : ill. - The Irwin Series in Marketing. . Includes bibliographical references and index. ISBN: 0256082049 Subjects--Topical Terms: Marketing.Advertising.Marketing--Management.