Hammarström, Harald & Forkel, Robert & Haspelmath, Martin. Glottolog 3.3. 2018. Jena: Max Planck Institute for the Science of Human History. https://glottolog.org/
Hammarström, Harald & Forkel, Robert & Haspelmath, Martin. Glottolog 3.3. 2018. Jena: Max Planck Institute for the Science of Human History. https://glottolog.org/