@book{20574,
	author = {Infante Gil, Said. and Calderón Aragón, Luz del Carmen.},
	title = {Manual de análisis PROBIT.},
	publisher = {Colegio de Postgraduados. Centro de Estadística y Cálculo,},
	year = {1980.},
	address = {Montecillos, Méx.. :}
}