GAEBEL, Michael; ZHANG, Thérèse. Nondegree Education in Europe: Opportunities for Lifelong Learning. International Higher Education, [S. l.], n. 122, p. 37–38, 2025. Disponível em: https://ejournals.bc.edu/index.php/ihe/article/view/20199. Acesso em: 28 apr. 2026.