ers Without Borders සංරක්ෂණය කළ පිටපත 2010-11-24 at the Wayback Machine.↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑  {{cite web}}: Empty citation (help)↑ Korenromp, E.L., Williams, B.G., de Vlas, S.J., Gouws, E., Gilks, C.F., Ghys, P.D., Nahlen, B.L. (2005).  උපුටාදැක්වීම් දෝෂය: Invalid <ref> tag; name "Korenromp" defined multiple times with different content↑  {{cite web}}: Empty citation (help)මූලාශ්‍ර[සංස්කරණය]Vedder, Heinrich (1997). Das alte Südwestafrika. Südwestafrikas Geschichte bis zum Tode Mahareros 1890 (German බසින්) (7th ed.). Windhoek: Namibia Scientific Society. ISBN 0-949995-33-9. {{cite book}}: Invalid |ref=harv (help); More than one of |ISBN= and |isbn= specified (help); More than one 