@book{518,
	author = {Blank, Leland T. and Tarquin, Anthony J.},
	title = {Ingeniería económica /},
	publisher = {McGraw-Hill,},
	year = {c1991.},
	address = {Bogotá :},
	edition = {3a ed.},
	note = {trad. Carlos Freddy Mendoza B.; rev. técnica Marco Fidel Castillo}
}