ਫਰਮਾ:Glottolog
Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). Glottolog 2.2. Leipzig: Max Planck Institute for Evolutionary Anthropology. {{cite book}}: Invalid |display-editors=4 (help)
Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). Glottolog 2.2. Leipzig: Max Planck Institute for Evolutionary Anthropology. {{cite book}}: Invalid |display-editors=4 (help)
