SCHUMANN, S.; OEPKE, M.; EBERLE, F. Reference Group Effects on Learning Motivation in Mathematics and Biology in Swiss Grammar Schools. Swiss Journal of Educational Research, [S. l.], v. 34, n. 3, p. 575–594, 2018. DOI: 10.24452/sjer.34.3.4897. Disponível em: https://sjer.ch/article/view/4897. Acesso em: 25 apr. 2024.