THEUNISSEN, Bert. Frans Verdoorn (1906–1984) – Biohistorie. Studium, Amsterdam, v. 6, n. 3-4, p. 292–295, 2013. DOI: 10.18352/studium.9294. Disponível em: https://platform.openjournals.nl/studium/article/view/20332.. Acesso em: 22 dec. 2024.