@book{6569,
	author = {Visauta Vinacua, Bienvenido. and Fernández Madrid, Concepción, },
	title = {Análisis estadístico con SPSS 11.0 para windows : },
	publisher = {McGraw-Hill, },
	year = {2002.},
	address = {Madrid : },
	edition = {2a ed.}
}