Ijo language

The sound system and spelling of Ịzọn

Kay Williamson, O.A. Egberipou (Rivers Readers Project).

Short Ịzọn-English dictionary

edited by Kay Williamson and A.O. Timitimi ; selected from material compiled by F.A. Aganaba ... [et al.].

Linguistik Ethnographie, Westafrika (Nigeria, Kamerun): 4°-8°N, 3°15'-9°30'E : Sprachen und Ethnien in Südnigeria und Westkamerun = Linguistics Ethnography, West Africa (Nigeria, Cameroun)

Herrmann Jungraithmayr und Herbert Ganslmayr.

The Ịzọn of the Niger Delta

edited by Ebiegberi Joe Alagoa, Tekena Notonye Tamuno, John Pepper Clark

A grammar of the Kolokuma dialect of Ijo.

Kay Williamson

Oral traditions of the Delta people =: Ikuegbe ve̲ etavwerhe re̲ ide̲lta (Urhobo) = Ita uṣe-ẹ̀ ghàrẹ iŕ Delta (Isekiri) = Ịsịa avọ ịtata iruẹru ahwo ịdẹlta (Isoko) = Dẹlịta otu arịbịbị eyerin-bụọ bo (Izon).

The sound system and spelling of Ịjọ

Kay Williamson, O.A. Egberipou

A linguistic guide to spoken Kalabari

Charles E.W. Jenewari

A unified standard orthography for the Ịjọ language cluster: Nigeria

[Cyprian Budonyefa Agbegha ... [et al.]]

The Izọn of the Niger Delta

Ebiegberi Joe Alagoa, Tekena Notonye Tamuno and John Pepper Clark