@book{3428,
	author = {Del Río González, CristobalCoautores.Del Río Sánchez, CristóbalDel Río Sánchez, Raymundo},
	title = {Costos IHistoricos},
	publisher = {Cengage Learning},
	year = {2011},
	address = {México D.F. },
	edition = {22ª }
}