@book{156,
	author = {Alles, Martha Alicia},
	title = {Selección por competencias},
	publisher = {Granica},
	year = {2006},
	address = {Buenos Aires :},
	edition = {1a. ed},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Seccion por competencias2-l117543.jpg}
}