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Unmask the giant (an ethnic survey of Bauchi State) . CAPRO Research Office (1995) ·

Genitive Constructions in South Bauchi (West Chadic) Languages, Zul and Polci, with Comparisons to Ancient Egyptian ( pp. 286-295 ) . Ronald Cosper and Garba Mohammed Gital (2004) · In Egyptian and Semito-Hamitic (Afro-Asiatic) Studies in Memoriam W. Vycichl edited by Gabor Takács · Brill

Tonal Inversion in Geji and Pelu . Bernard Caron (2011) · https://halshs.archives-ouvertes.fr/halshs-00647257v1/document

Polci Languages . Bernard Caron (2005) · https://hal.archives-ouvertes.fr/file/index/docid/647754/filename/Caron2005_Polci.pdf

The Southern Bauchi group of Chadic languages: a survey report . Kiyoshi Shimizu (1978) · Africana Marburgensia.

Barawa Lexicon: A wordlist of eight South Bauchi (West Chadic) languages: Boghom, Buli, Dott, Geji, Jimi, Polci, Sayanci and Zul . Ronald Cosper (1999) · LINCOM Studies in African Linguistics · Vol. 39 · München: Lincom