MÁČEL, O. V=Vorm. Nederlandse vormgeving 1940-1945. Bulletin KNOB, [S. l.], v. 117, n. 2, p. 126-128, 2018. DOI: 10.7480/knob.117.2018.2.2458. Disponível em: https://bulletin.knob.nl/index.php/knob/article/view/153. Acesso em: 17 jan. 2021.