@book{190046,
	author = {Kotler, Philip, and Armstrong, Gary},
	title = {Principles of marketing},
	publisher = {Prentice Hall},
	year = {c1999.},
	series = {Prentice Hall series in marketing},
	address = {Englewood Cliffs, N.J.},
	edition = {8th ed.},
	note = {ESTE LIBRO INCLUYE UN DISCO}
}