@book{4807,
	author = {Ackerman, Mario E. and Maza, Miguel Ángel},
	title = {Manual de elementos de derecho del trabajo y de la seguridad social},
	publisher = {Rubinzal-Culzoni Editores},
	year = {2019},
	address = {Santa Fe :},
	url = {https://www.biblioeco.unsa.edu.ar/pmb/images/libros/L128012.jpg}
}