@book{3279,
	author = {HERNANDEZ SAMPIERI, ROBERTO. and FERNANDEZ COLLADO, CARLOS.},
	title = {METODOLOGIA DE LA INVESTIGACION/ },
	publisher = {MCGRAW-HILL 1991},
	year = {1991},
	address = {MEXICO: },
	note = {INCLUYE BIBLIOGRAFIA E INDICE.}
}