@book{112054,
	title = {540 - Declaración consolidada de pagos},
	publisher = {Legis Editores S.A.},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.legiscomex.com/BancoMedios/Documentos%20PDF/declaracion-consolidada-pagos-540-2013.pdf}
}