Haya language
Haya (Oluhaya; Swahili: Kihaya) is a Niger–Congo language spoken by the Haya people of Tanzania, in the south and southwest coast of Lake Victoria. In 1991, the population of Haya speakers was estimated at 1,200,000 people .
Maho (2009) classifies JE221 Rashi as closest to Haya. It has no ISO code.
References
Maho, Jouni & Bonny Sands. 2002. The languages of Tanzania: a bibliography. (Orientalia et africana gothoburgensia, no 17.) Göteborg: Acta Universitatis Gothoburgensis. Pp ix, 428. ISBN 91-7346-454-6
This bibliography mentions other references like:
Betbeder, Paul; Jones, John. 1949. A handbook of the Haya language. Bukoba (Tanganyika): White Fathers Printing Press.
Byarushengo, Ernest Rugwa; Duranti, Alessandro; Hyman, Larry M[ichael]. (Eds.) 1977. Haya grammatical structure: phonology, grammar, discourse. (Southern California occasional papers in linguistics (SCOPIL), no 6.) Los Angeles: Department of Linguistics, University of Southern California. Pp 213.
Herrmann, [Kapitän] C. 1904. Lusíba, die Sprache der Länder Kisíba, Bugábu, Kjamtwára, Kjánja und Ihángiro. Mitteilungen des Seminars für orientalische Sprachen, 7 (III. Abt.), pp. 150–200.