Burgos Peredo, O.E., Perales Palacios, F.J. y Gutiérrez Pérez, J. 2010. Quality evaluation in schools incorporated in the National system of environmental certification from the Bio Bio provine (Chile). Profesorado, Revista de Currículum y Formación del Profesorado. 14, 2 (sep. 2010), 213–240.