^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (编). Phana'. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.
^Bradley, David. 2007. East and Southeast Asia. In Moseley, Christopher (ed.), Encyclopedia of the World's Endangered Languages. London & New York: Routledge.
^Lefèvre-Pontalis, Pierre. 1892. Notes sur quelques populations du nord de l'Indo-Chine [Notes on some populations of northern Indo-China]. Journal Asiatique 19, 8, 8.