@book{37242,
	author = {Universidad Nacional de Colombia},
	title = {Región Central de Colombia},
	publisher = {Alcaldía Mayor de Bogotá },
	year = {2005},
	series = {Integración Regional},
	address = {Bogotá D.C.},
	url = {http://www.sdp.gov.co/sites/default/files/aportes_para_la_caracterizacion_de_los_territorios_que_la_componen_0.pdf}
}