@book{3829,
	author = {Lipsey, Richard G. and Tugores Ques, Juan},
	title = {Introducción a la economía positiva},
	publisher = {Vicens-Vives},
	year = {1991},
	address = {Barcelona :},
	edition = {12a. ed.},
	url = {https://www.biblioeco.unsa.edu.ar/pmb/images/libros/L127011.jpg}
}