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Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (编). Sikkimese. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.
Norboo, S. The Sikkimese Bhutia(PDF). Bulletin of Tibetology. Gangtok: Namgyal Institute of Tibetology: 114–115. 1995 [2011-07-04]. (原始内容存档(PDF)于2016-03-03).