@book{73,
	author = {Garmendia Guerrero, Demetrio and Gujarati, Damodar N.},
	title = {Econometría},
	publisher = {McGraw-Hill},
	year = {2004},
	address = {México :},
	edition = {4a. ed},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Econometr?a.jpg}
}