SPERISEN, Vera. Künzli, Rudolf; Fries, Anna-Verena; Hürlimann, Werner; Rosenmund, Moritz (2013). Der Lehrplan – Programm der Schule. Swiss Journal of Educational Research, Bern, v. 37, n. 2, 2018. DOI: 10.24452/sjer.37.2.5211. Disponível em: https://sjer.ch/article/view/5211. Acesso em: 23 feb. 2025.