@book{38278,
	author = {Pearson, E. S. and Hartley, H. O.},
	title = {Biometrika tables for statisticians},
	publisher = {Biometrika Trust,},
	year = {1976},
	address = {London :},
	edition = {Ed. rev.},
	note = {Ed. similar a la editada por Cambridge University en 1962.}
}