@book{89801,
	author = {PORTER, Michael E. and ROSAS SÁNCHEZ, María Elena. tr.},
	title = {Estrategia competitiva},
	publisher = {: Patria},
	year = {2010},
	address = {México},
	edition = {40a reimp.},
	note = {Incluye: tabla de contenido, índice y bibliografía.}
}