- FamilySea
- 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 Berendje Van Der Weerd, person ID LZV1-RTD.
- 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 Berendje Ruggers Van Der Weerd, person ID LZKM-S6T.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">
- FamilySea
- 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 Berendje Van Der Weerd, person ID LZV1-RTD.
- 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 Berendje Ruggers Van Der Weerd, person ID LZKM-S6T.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">