@book{32237,
	author = {Clement, Norris C. and Pool, Jonh Charles; Rodríguez García, Mauro; Revisión Técnica},
	title = {Economía},
	publisher = {Mc Graw Hill},
	year = {1997},
	address = {Bogotá (Colombia)},
	edition = {4a. ed.}
}