- FamilyS
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 28 Jun 2016), entry for Izaak Pieter De Villiers, person ID LL47-85X.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 28 Jun 2016), entry for Maria Sophia De Villiers, person ID LL47-DY8.
» Quellen » Familienstammbaum M. Tolsma » Genealogie Online">
- FamilyS
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 28 Jun 2016), entry for Izaak Pieter De Villiers, person ID LL47-85X.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 28 Jun 2016), entry for Maria Sophia De Villiers, person ID LL47-DY8.
» Quellen » Familienstammbaum M. Tolsma » Genealogie Online">