- FamilySearch Famil
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 10 Jun 2016), entry for Klaas de Jong, person ID LH1H-CT2.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 10 Jun 2016), entry for Klaas De Jong, person ID L7KX-DW5.
» Quellen » Familienstammbaum M. Tolsma » Genealogie Online">
- FamilySearch Famil
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 10 Jun 2016), entry for Klaas de Jong, person ID LH1H-CT2.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 10 Jun 2016), entry for Klaas De Jong, person ID L7KX-DW5.
» Quellen » Familienstammbaum M. Tolsma » Genealogie Online">