@book{25002,
	author = {Wooldridge, Jeffrey M. and Beyaer Stevens, Arielle...[et. al.],},
	title = {Introducción a la Econometría: Un Enfoque Moderno /},
	publisher = {Internacional Thompson Editores,},
	year = {2006.},
	address = {Madrid :},
	edition = {2.}
}