PIETERS, Toine. Gemma Blok, Ziek of zwak. Geschiedenis van de verslavingszorg (2011). Studium, Amsterdam, v. 4, n. 3, p. 190–191, 2011. DOI: 10.18352/studium.1527. Disponível em: https://platform.openjournals.nl/studium/article/view/20271.. Acesso em: 23 dec. 2024.