- ISBN 978-951-746-529-8. Tirronen,
Toivo Emil (1986). Ndonga–English Dictionary. Oniipa, Namibia:
Oshinyanyangidho shongeleki ELCIN.
PanAfrican L10n page on Oshiwambo...
-
Retrieved 26 May 2020.
Toivo Emil Tirronen: Ndonga-English Dictionary.
Oshinyanyangidho shongeleki ELCIN. Oniipa, 1986. (in German) Karl Angebauer, Ovambo :...