@book{24889,
	author = {Baca Urbina, Gabriel. and Vergara Nava, Leonardo.},
	title = {Evaluación de proyectos :},
	publisher = {McGraw-Hill,},
	year = {1993.},
	address = {México, D. F. :},
	edition = {2a ed.},
	note = {Incluye índice alfabético.}
}