- FamilySearch F
- 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 Rudolph van Arkel, person ID KCQC-HBD.
- 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 Rudolph Ferdinand van Arkel, person ID LZPM-HB9.
» 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 28 Jun 2016), entry for Rudolph van Arkel, person ID KCQC-HBD.
- 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 Rudolph Ferdinand van Arkel, person ID LZPM-HB9.
» Les sources » Arbre généalogique M. Tolsma » Généalogie Online">