@book{39401,
	author = {Ortega, Marisol and Campo Cabal, Alvaro,},
	title = {Gerencia de Costos y Presupuestos /},
	publisher = {convenio Andrés Bello,},
	year = {1994.},
	address = {Santafé de Bogotá :},
	edition = {2.}
}