KOPIJ, G. Avian diversity and assemblages around Ruacana Waterfall, north-western Namibia. International Science and Technology Journal of Namibia, [S. l.], p. 084–096, 2015. Disponível em: https://journals.unam.edu.na/index.php/ISTJN/article/view/1175. Acesso em: 4 may. 2024.