"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QLRM-ZWZ8 : 6 October 2017), Jacobus Volkert Klavan and Alijda Kriek, Marriage 02 Oct 1817, Leiden, Zuid-Holland, Nederland; from database,
openarchives (https://www.openarch.nl : 2016); citing Leiden, archive , inventory number , record number 118; ; Nationaal Archief Rijksarchief Zuid-Holland.