@book{1030,
	author = {Mills, Frederick Cecil},
	title = {Métodos estadísticos.},
	publisher = {Aguilar, },
	year = {1959.},
	series = {Biblioteca de Ciencias Sociales.},
	address = {Madrid : },
	edition = {10ma.ed.},
	note = {Notas a pié de página. }
}