@book{4894,
	author = {Sapag Puelma, José Manuel},
	title = {Evaluación de proyectos},
	publisher = {McGraw-Hill},
	year = {2000},
	address = {Santiago :},
	edition = {2a. ed.},
	url = {https://www.biblioeco.unsa.edu.ar/pmb/images/libros/L128201.jpg}
}