@book{6471,
	author = {Visauta Vinacua, Bienvenido. and Fernández Madrid, Concepción, },
	title = {Análisis estadístico con SPSS para windows : },
	publisher = {McGraw-Hill, },
	year = {1997.},
	address = {Madrid : },
	edition = {Editora Concepción Fernández Madrid.}
}