RAU, Jennifer. Modal verbs in complement clauses - Interpretable or not?. Proceedings of the Amsterdam Colloquium, Amsterdam, p. 23–26, 2007. DOI: 10.53437/erxr7q82. Disponível em: https://platform.openjournals.nl/PAC/article/view/22753. Acesso em: 27 aug. 2026.