@book{30297,
	author = {Munch Galindo, Lourdes. and Ángeles, Ernesto.},
	title = {Métodos y técnicas de Investigación /},
	publisher = {Trillas,},
	year = {1990.},
	address = {México :},
	edition = {2a ed.},
	note = {Incluye glosario y preguntas de repaso.}
}