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) ·

The Ayu language of Central Nigeria and its affinities . Roger Blench (2011) · http://www.rogerblench.info/Language/Niger-Congo/BC/Plateau/Ninzic/Ayu%%20wordlist%%20paper.pdf

Bemerkungen zur Stellung des Ayu innerhalb der zentralen Plateau-Sprachen Nigerias ( pp. 79-94 ) . Ludwig Gerhardt (2006) · In Zwischen Bantu und Burkina: Festschrift für Gudrun Miehe zum 65.~Geburtstag Beiträge zur Afrikanistik 44 · Vol. 14 · edited by Dymitr Ibriszimow and Kerstin Winkelmann · Köln: Rüdiger Köppe

Benue-Congo Comparative Wordlist . Kay Williamson (1973) · University of Ibadan, Nigeria: West African Linguistic Society

Research on minority languages of Nigeria in 2001 ( pp. 9-11 ) . Roger Blench (2002) · Ogmios Newsletter. http://www.ogmios.org/ogmios/Ogmios_020.pdf

An Atlas of Nigerian Languages . Roger Blench (2011) · Mallam Dendo http://www.rogerblench.info/Language/Africa/Nigeria/Atlas%%20of%%20Nigerian%%20Languages-%%20ed%%20III.pdf