- Fami
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 29 Jun 2016), entry for Johan Willem Jacob Toewater, person ID K6M6-D7Y.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 29 Jun 2016), entry for Johan Willem Jacob Toewater, person ID K2XS-CMP.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">
- Fami
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 29 Jun 2016), entry for Johan Willem Jacob Toewater, person ID K6M6-D7Y.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 29 Jun 2016), entry for Johan Willem Jacob Toewater, person ID K2XS-CMP.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">