@book{8886,
	author = {McMahon, Rosemary. and Barton, Elizabeth.},
	title = {Guia para la gestion de la atencion primaria de salud /},
	publisher = {Organizacion Panamericana de la Salud OPS,},
	year = {1997.},
	address = {Washington :},
	edition = {2a ed.}
}