Engel, James F Promotional strategy: managing the marketing communications process/ James F. Engel, Martin R. Warshaw, Thomas C. Kinnear. - 4th ed. - Homewood, Ill: R. D. Irwin, 1979. - xiv, 755 p. : 2 leaves of plates: ill.; 25 cm. Includes bibliographical references and index. ISBN: 0256021562 Subjects--Topical Terms: Marketing.Advertising.Marketing management.