Ijaw languages

Nchịkọta 
A na-ewere asụsụ Ijo dị ka ngalaba pụrụ iche nke ezinụlọ Niger–Congo (ikekwe ya na Defaka n'ime otu a na-akpọ Ijoid).[1]  Ha bụ ndị ama ama maka isiokwu ha – ihe – ngwaa bụ isi okwu n'usoro, nke bụ ihe a na-adịghị ahụkebe na Niger – Kongo, nke naanị alaka ndị dị anya dị ka Mande na Dogon kesara.  Dị ka Mande na Dogon, Ijoid enweghị ọbụna akara nke usoro klaasị aha a na-ewere dị ka njirimara Niger-Congo.  Nke a kpaliri Joseph Greenberg, na nhazi mbụ ya nke Niger–Congo, ịkọwa ha dị ka ndị ha kewara n'oge na ezinụlọ ahụ.  Agbanyeghị, n'ihi enweghị njirimara ndị a, ọkà mmụta asụsụ Gerrit Dimmendaal na-enwe obi abụọ na nsonye ha na Niger–Congo kpam kpam wee were asụsụ Ijoid dị ka ezinụlọ nweere onwe ya..

 Edensibia 

 Akwụkwọ 

 Freemann, R. A., and Kay Williamson.  1967.  Ịjọ proverbs.  Research Notes (Ibadan) 1:1-11.
 Kouwenberg, Silvia  1994. A grammar of Berbice Dutch Creole. (Mouton Grammar Library 12). Berlin/New York: Mouton de Gruyter.
 Lee, J. D., and Kay Williamson.  1990.  A lexicostatistic classification of Ịjọ dialects.  Research in African Languages and Linguistics 1:1.1-10.
 Williamson, Kay.  1963.  The syntax of verbs of motion in Ịjọ.  J. African Languages 2.150-154.
 Williamson, Kay.  1966.  Ịjọ dialects in the Polyglotta Africana.  Sierra Leone Language Review 5.  122-133.
 Williamson, Kay.  1969.  'Igbo' and 'Ịjọ', chapters 7 and 8 in: Twelve Nigerian Languages, ed. by E. Dunstan.  Longmans.
 Williamson, Kay.  1971.  Animal names in Ịjọ.  Afr. Notes 6, no. 2, 53-61.
 Williamson, Kay.  1973.  Some reduced vowel harmony systems.  Research Notes 6:1-3. 145-169.
 Williamson, Kay.  1977.  Multivalued features for consonants.  Language 53.843-871.
 Williamson, Kay.  1978.  From tone to pitch-accent: the case of Ịjọ.  Kiabàrà 1:2.116-125.
 Williamson, Kay.  1979.  Consonant distribution in Ịjọ.  In: Linguistic and literary studies presented to Archibald Hill, ed.  E.C. Polome and W. Winter, 3.341-353.  Lisse, Netherlands: Peter de Ridder Press.
 Williamson, Kay.  1979.  Medial consonants in Proto-Ịjọ.  Journal of African Languages and Linguistics 1.73-94.
 Williamson, Kay.  1987.  Nasality in Ịjọ.  In: Current trends in African linguistics, 4, ed.  by David Odden, 397-415.
 Williamson, Kay.  1989.  Tone and accent in Ịjọ.  In Pitch accent systems, ed.  by Harry v.d. Hulst and Norval Smith, 253-278.  Foris Publications.
 Williamson, Kay.  2004.  The language situation in the Niger Delta.  Chapter 2 in: The development of Ịzọn language, edited by Martha L. Akpana, 9-13.
 Williamson, Kay, and A. O. Timitimi.  1970.  A note on number symbolism in Ịjọ.  African Notes (Ibadan) 5:3. 9-16.
 Williamson, Kay & Timitime, A.O. (197?) 'A note on Ijo number symbolism', African Notes, 5, 3, 9-16.
 Filatei, Akpodigha.  2006.  The Ijaw Language Project. (Editor of www.ijawdictionary.com).  www.ijawdictionary.com