ISBN 978-0-621-41388-5. (原始内容 (PDF)存档于2018年12月25日). (英文) Doke, Clement M. (1954). The SouthernBantu Languages. Handbook of African Languages. Oxford: Oxford University
Clement M.; Dart,Raymond A.; Goodwin,A.J.H.; Marais,J.S.; Eiselen,W.M. The Bantu Speaking Tribes Of South Africa. Routledge And Kegan Paul Limited. 1962: