VAN REGTEREN ALTENA, J. Q. In Memoriam Isaäc de Bruyn . The Rijksmuseum Bulletin, [S. l.], v. 2, n. 2, p. 27–28, 1954. DOI: 10.52476/trb.21527. Disponível em: https://bulletin.rijksmuseum.nl/article/view/21527.. Acesso em: 10 mar. 2025.