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ReferencesEdit

  1. ^ Duma at Ethnologue (18th ed., 2015)
  2. ^ Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Duma". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
  3. ^ Jouni Filip Maho, 2009. New Updated Guthrie List Online