- FamilySearch F
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 4 Jul 2016), entry for Marritjen van Unen, person ID LHKT-6FW.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 4 Jul 2016), entry for Marritjen van Unen, person ID LHKT-6F4.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">
- FamilySearch F
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 4 Jul 2016), entry for Marritjen van Unen, person ID LHKT-6FW.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 4 Jul 2016), entry for Marritjen van Unen, person ID LHKT-6F4.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">