@book{80009,
	author = {Hopkins, Kenneth D. and Glass, Gene V.},
	title = {Estadística básica para las Ciencias Sociales y del comportamiento},
	publisher = {Prentice Hall,},
	year = {1997.},
	address = {México, D.F. ;},
	note = {Trad. de : Basic statistics for the behavioral science, 3 ed. de 1996.}
}