WOUTERS, G. Martin Mulder: Professionalisering van de vereniging. Levende Talen Magazine, Utrecht, Nederland, v. 97, n. 8, p. 42–43, 2010. Disponível em: https://lt-tijdschriften.nl/ojs/index.php/ltm/article/view/578. Acesso em: 16 apr. 2024.