Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

Ethnologue: Languages of the World, 16th Edition (2009) . (2009) · edited by M. Paul Lewis · SIL International http://www.ethnologue.com/

Verbal extensions in Swahili and neighbouring languages ( pp. 23-44 ) . Miehe, Gudrun (1989) · Logos. 9 (1) ·

An Elementary Introduction to the Taita Language (Eastern Equatorial Africa) . J. Alfred Wray (1894) · London: Society for the Promotion of Christian Knowledge

E.70 Nyika-Taita group: E.71 West Pokomo (Pfokomo), E.72a Giryama, E.72b Kauma (Nika, Nyika), E.72c Conyi, E.72d Duruma, E.72e Rabai, E.73 Digo, E.74a Dabida (Taita), E.74b Sagala (Taita) ( pp. 46-47 ) . Guthrie, Malcolm (1971) · In Comparative Bantu Gregg International

Bantu group C (British East Africa), language 14: Taita (Kidabida, Kisagala) . Johnston, Harry Hamilton (1919/22) · In A comparative study of the Bantu and semi-Bantu languages Clarendon Press

A comparative study of the Bantu and semi-Bantu languages ( pp. xi, 819, map; xii, 544 ) . Johnston, Harry Hamilton (1919/22) · Clarendon Press

Relationships among six north-east African Bantu languages . Hauner, Magdalena Slavíková (1975) ·