IN MEMORIAM Prof. Em. Cyriel De Keyser 1921-2001. Pedagogische Studiën 79(1). Pedagogische Studiën, [S. l.], v. 79, n. 1, 2023. Disponível em: https://testplatform.openjournals.nl/pedagogischestudien/article/view/14722.. Acesso em: 20 sep. 2024.