Roland Bielmeier and Katrin Häsler and Chungda Haller and Felix Haller and Veronika Hein and Brigitte Huber and Marianne Volkart and Thomas Preiswerk and Ngawang Tsering and Manuel Widmer and Marius Zemp 2018: 38-48
Glottolog
[tpq] at ISO 639-3
[tpq] at OLAC
[tpq] at IMTVault
Wikipedia
Nyamkad at WALS
Wikidata