@book{30448,
	author = {Alexander, Carter and Burke, Arvid J.},
	title = {Metodos de investigación :},
	publisher = {Unión Panamericana,},
	year = {1962.},
	series = {Manuales del Bibliotecario ;},
	address = {Washington, D.C. :},
	edition = {1a ed.}
}