Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q18655110 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/40675599 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.80131 |
| Adamlink URI | https://adamlink.nl/person/beek-martinus-adrianus/9502 |
