@book{221200,
	author = {Ferrell, O. C. and Hirt, Geoffrey A},
	title = {Introducción a los negocios},
	publisher = {Mc Graw Hill},
	year = {2010.},
	address = {México},
	edition = {7a ed.},
	note = {Translation of: Business : a changing world, 7th ed. c2009.}
}