↑Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, ed. (2023). "Tibetan". Glottolog 4.8. Jena, Jerman: Max Planck Institute for the Science of Human History. ; ;
↑Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, ed. (2023). "South-Western Tibetic". Glottolog 4.8. Jena, Jerman: Max Planck Institute for the Science of Human History. ; ;
↑Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, ed. (2023). "Basum". Glottolog 4.8. Jena, Jerman: Max Planck Institute for the Science of Human History. ; ;
