Elizabet Schalk en tant qu·Äôentrâ©e de Peter Slijkoord et de Magdalena Geertrui de Kriek, "Netherlands, Archival Indexes, Vital Records, 1600-2000"
"Nederland, Indexen van de Archieven, Primaire Archiefstukken (BS en DTB), 1600-2000," database,
FamilySearch (
https://familysearch.org/ark:/61903/1:1:QL55-RXRD : 6 October 2017), Elizabet Schalk in entry for Peter Slijkoord and Magdalena Geertrui de Kriek, Marriage 18 Apr 1840, Vuren, Gelderland, Nederland; from database,
openarchives (https://www.openarch.nl : 2016); citing Vuren, archive 0207, inventory number 2741, record number 2; ; Gelders Archief.