Engel, James F. Promotional strategy : managing the marketing communications process / James F. Engel, Martin R. Warshaw and Thomas C. Kinnear. - 6th ed. - Homewood, Ill., Irwin, c1987. - xvi, 621 pages : illustrations ; 24 cm. - The Irwin series in marketing. . Includes bibliographical references and indexes. ISBN: 0256036438 Subjects--Topical Terms: Marketing--Management.Marketing.Advertising. Dewey Class. No.: 658.82 ENG