سانچو:Glottolog
Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian, مرتب (2016). Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History.
Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian, مرتب (2016). Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History.
