@book{5063,
	author = {Oxenfeldt, Alfred Richard,  and Maiguashca G., Franklin, },
	title = {Análisis de costo-beneficio para la toma de decisiones / },
	publisher = {Editorial Norma, },
	year = {1985.},
	address = {Bogotá : },
	note = {Incluye índice.}
}