|(20,000 cited 1988)|
The Bauchi languages have a set of unusual sounds for the area, called "linguo-labials" by Blench. They are similar to the interdental approximants of the Philippines, where the tongue can protrude slightly over the lower lip.
- Bauchi at Ethnologue (18th ed., 2015)
- Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Bauchi". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
- Blench 2011
- Blench, Roger (2012). "The Kainji languages of northwestern and central Nigeria" (PDF). Cambridge: Kay Williamson Educational Foundation.