Johnston, Harry Hamilton. 1919/22. "Bantu Group V (West Zambezia), Language 83b: Sikoma." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group V (West Zambezia), Language 81: Yeye (Makoba, Bakhoba)." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group U (West-Central Zambezia), Language 80: Subia (Shubia, Shubea)." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group T (Zulu-Kafir), Language 75: Cosa (‘Kafir’ Dialects), Incl. Feñgu, Baca, Pondo, and the Woman’s Speech Hlonipha." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group SS (Kadei-Sañga-Lobai), Language 224: Bayañga or Bayaka (of Niumba), Pygmies’ Dialects of Upper Sañga and Lobai." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group OO (Spanish Guinea-West Cameroons), Language 212: Abo or Abô." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group OO (Spanish Guinea-West Cameroons), Language 210: Barombi-Mboñge." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group OO (Spanish Guinea-West Cameroons), Language 205: Isubu (Bimbia)." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group OO (Spanish Guinea-West Cameroons), Language 194: Sheke-Bulu (Shekiani), Seke, Koelle’s ‘Baseke’." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.

Johnston, Harry Hamilton. 1919/22. "Bantu Group MM (Central Ogowe), Language 188: Baboñgo (Akwa, Waka)." In A comparative study of the Bantu and semi-Bantu languages, Clarendon Press.