"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLMD-YPNP : 22 August 2017), Willem Dorland and Gerritje Floor, Marriage 14 Nov 1891, Hilversum, Noord-Holland, Netherlands; from database,
openarchives (https://www.openarch.nl : 2016); citing Haarlem, inventory number , record number 86; ; Noord-Hollands Archief.