@book{32309,
	author = {Nunnally, Jum C. and Bernstein, Ira J.},
	title = {Teoria psicometrica /},
	publisher = {MaGraw-Hill,},
	year = {1995.},
	address = {Mexico :},
	edition = {2a ed.},
	note = {Incluye indice.}
}