@book{205,
	author = {Kotler, Philip. and Armstrong, Gary},
	title = {Principles of marketing /},
	publisher = {Prentice Hall,},
	year = {c2002.},
	series = {The Prentice Hall series in marketing},
	address = {Englewood Cliffs, N.J. :},
	edition = {5th ed.}
}