Engel, James F. Promotional strategy : managing the marketing communications process / James F. Engel, Martin R. Warshaw, Thomas C. Kinnear. - 8th ed. - Boston, massachusetts : Mcgraw-Hill, 1991. - xv, 624 p. : ill. ; 24 cm. - The Irwin series in marketing . ISBN: 0256122407 : Subjects--Topical Terms: Marketing.Advertising. LC Class. No.: HF5415 / .E54 1991