- FamilySearch Fami
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Egbert Holland, person ID LHPM-G9N.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Egbert Count of Holland, person ID LZD8-Q86.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">
- FamilySearch Fami
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Egbert Holland, person ID LHPM-G9N.
- FamilySearch Family Tree (http://www.familysearch.org) - "FamilySearch," database, \i FamilySearch\i0 - The Church of Jesus Christ of Latter-day Saints - accessed 27 Jun 2016), entry for Egbert Count of Holland, person ID LZD8-Q86.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">