@book{4904,
	author = {Nicholson, Walter},
	title = {Teoría microeconómica},
	publisher = {Thomson},
	year = {2004},
	address = {Madrid :},
	edition = {8a. ed.},
	url = {https://www.biblioeco.unsa.edu.ar/pmb/images/libros/L128214.jpg}
}