OTTEN, Dirk. Halme, Riikka 2004. A Tonal Grammar of Kwanyama. AAeO - Afrikanistik-Aegyptologie-Online, [S. l.], 2006. DOI: 10.18716/ojs/aaeo/2006_3514. Disponível em: https://journals.ub.uni-koeln.de/index.php/AAeo/article/view/3514. Acesso em: 6 may. 2025.