Kotler, Philip Principles of marketing / Philip Kotler and Gary Armstrong - 7th ed. - New Delhi : Prentice-Hall, c1997. - xvii, 712 p. : ill. ; 28 cm. ISBN: 8120310772 LCCN: Subjects--Topical Terms: Marketing LC Class. No.: HF5415 / .K636 1994 Dewey Class. No.: 658.8 / K87p