Kotler, Philip. Principles of marketing / Philip Kotler, Gary Armstrong - 7th ed. - London : Prentice Hall, 1996 - xviii, 712, [49] p. : ill. (some col.) ; 28 cm. ISBN: 0132286858 Subjects--Topical Terms: Maketing. Dewey Class. No.: 658.8 / KOT 1996