@book{612,
	author = {Vargas Vargas, Laura.  and Bustillos de Núñez, Graciela.},
	title = {Técnicas participativas para la educación popular /  },
	publisher = {Lumen-Humanitas : },
	year = {c1989-1997.},
	address = {Buenos Aires : },
	note = {Vol. 1, 3a. y 7a. ed.; vol. 2, 6a. ed.}
}