الگو:Glottolog
Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). Glottolog 2.2. Leipzig: Max Planck Institute for Evolutionary Anthropology. {{cite book}}
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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)