@book{24407,
	author = {Gutiérrez Pulido, Humberto. and Vara Salazar, Román de la.},
	title = {Control estadístico de calidad y seis sigma /},
	publisher = {McGraw Hill Interamericana },
	year = {c2004.},
	address = {México },
	note = {Incluye índice}
}