Kotler, Philip. Principles of marketing / Philip Kotler, Gary Armstrong. - 9th ed. - Upper Saddle River, NJ : Prentice Hall, c2001. - xxxi, 785 p. : ill. ; 28 cm + 1 computer laser optical disc (4 3/4 in. ) Includes bibliographical references and index. ISBN: 0130283290 : Subjects--Topical Terms: Marketing. LC Class. No.: HF5415 / .K68 2001