@book{12697,
	author = {Rojas Soriano, Raúl, },
	title = {Guía para realizar investigaciones sociales /},
	publisher = {Instituto Politécnico Nacional : },
	year = {1987},
	series = {Folios},
	address = {México :},
	note = {Reimpresión: 4a (1989), 7a (1991)}
}