@book{13521,
	author = {Velandia Forero, Nubia Yomara, },
	title = {PUC 2012 :},
	publisher = {Legis,},
	year = {2012.},
	address = {Bogotá :},
	edition = {20a ed.},
	note = {Consulta del contenido también en Internet}
}