@book{400,
	author = {Roitbarg, Marcelo R.},
	title = {Derecho civil},
	publisher = {A-Z Editora},
	year = {2011},
	address = {Buenos Aires :},
	edition = {4a. ed.},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Derecho Civil-l118365 (2).jpg}
}