@book{328,
	author = {Etala, Carlos Alberto},
	title = {Derecho colectivo del trabajo},
	publisher = {Astrea},
	year = {2007},
	address = {Buenos Aires :},
	edition = {2a. ed.},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Derecho Colectivo del Trabajo-l118286.jpg}
}