Bibliography

Bibliography of Vitality:
Lewis, M. Paul (ed.). 2009. Ethnologue: Languages of the World, 16 edn. http://www.ethnologue.com/home.asp. (15 February, 2011.)
Bibliography of Locations:
Hammarström, Harald & Forkel, Robert & Haspelmath, Martin & Bank, Sebastian. 2021.
Glottolog 4.4. Leipzig: Max Planck Institute for Evolutionary Anthropology. https://doi.org/10.5281/zenodo.4761960 (Available online at http://glottolog.org, Accessed on 2021-10-13.)
Bibliography of Context:
Lewis, M. Paul (ed.). 2009. Ethnologue: Languages of the World, 16 edn. http://www.ethnologue.com/home.asp. (15 February, 2011.)