(en) Holly Ann Higgins, Ikoma vowel harmony: phonetics and phonology, SIL International, coll.«SIL e-Books» (no43), (lire en ligne)
(en) Holly Robinson, Ikoma orthography statement, SIL International, Uganda-Tanzania Branch, (lire en ligne)
(en) Rugatiri D. K. Mekacha, The sociolinguistic impact of Kiswahili on ethnic community languages in Tanzania: a case study of Ekinata, Bayreuth University, Bayreuth, 1993, 237 p. (ISBN3927510254)