Sperisen, Vera. “Künzli, Rudolf; Fries, Anna-Verena; Hürlimann, Werner; Rosenmund, Moritz (2013). Der Lehrplan – Programm Der Schule”. Swiss Journal of Educational Research, vol. 37, no. 2, Oct. 2018, https://doi.org/10.24452/sjer.37.2.5211.