MÈLICH, Joan-Carles; ÚCAR, Xavier. Presentación. EDUCAR, Cerdanyola del Vallès, Spain, v. 18, p. 5–6, 1991. DOI: 10.5565/rev/educar.483. Disponível em: https://educar.uab.cat/article/view/v18-melich-ucar-2. Acesso em: 29 jun. 2025.