^Sebeok, Thomas Albert, ed (1971). Current Trends in Linguistics. Walter de Gruyter. pp. 425. オリジナルの7 December 2014時点におけるアーカイブ。. https://web.archive.org/web/20141207082534/https://books.google.com/books?id=JqYMTdBws40C&q=balbodh
^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin et al., eds (2016). “Korku”. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. http://glottolog.org/resource/languoid/id/kork1243