@book{34843,
	author = {Leal Pérez, Hildebrando.},
	title = {Manual de contratos /},
	publisher = {Leyer,},
	year = {impresion 2017.},
	address = {Bogotá :},
	edition = {2a. ed.},
	note = {Incluye indice alfabetico de materias.}
}