@book{212599,
	author = {Kerin, Roger A. and Hartley, Steven William},
	title = {Marketing},
	publisher = {McGraw-Hill},
	year = {c2009.},
	series = {McGraw-Hill Educación},
	address = {México},
	edition = {9th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/ecip089/2008002053.html}
}