@book{34788,
	author = {Clegg, Frances. and Bidon-Chanal, Carlos,},
	title = {Estadística fácil :},
	publisher = {Crítica,},
	year = {1984.},
	series = {Serie general. Estudios y ensayos ;},
	address = {Barcelona :},
	note = {Translation of: Simple statistics, a course book for the social sciences.}
}