@book{20135,
	author = {Ospina Fernández, Guillermo and Ospina Acosta, Eduardo, editor.},
	title = {Régimen general de las obligaciones /},
	publisher = {Timis S.A,},
	year = {2018},
	address = {Bogotá, Colombia :},
	edition = {Octava edición},
	note = {Incluye índice.}
}