^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (編). Pnar. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.
^Sidwell, Paul. The Katuic languages: classification, reconstruction and comparative lexicon. LINCOM studies in Asian linguistics, 58. Muenchen: Lincom Europa. 2005. ISBN 3-89586-802-7.