OLGERS, A. De buitenplaats Waterland te Velsen. Bulletin KNOB, [S. l.], v. 88, n. 4, p. 22–30, 1989. DOI: 10.7480/knob.88.1989.4.568. Disponível em: https://bulletin.knob.nl/index.php/knob/article/view/Olgers22. Acesso em: 5 dec. 2024.