- Kingsadā, Thō̜ngphet, and Tadahiko Shintani. 1999 Basic Vocabularies of the Languages Spoken in Phongxaly, Lao P.D.R. Tokyo: Institute for the Study of Languages and Cultures of Asia and Africa (ILCAA).
- Shintani, Tadahiko, Ryuichi Kosaka, and Takashi Kato. 2001. Linguistic Survey of Phongxaly, Lao P.D.R. Tokyo: Institute for the Study of Languages and Cultures of Asia and Africa (ILCAA).
- Wright, Pamela Sue. n.d. Singsali (Phunoi) Speech Varieties Of Phongsali Province. m.s.
Sino-Tibetan branches | |||||
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| Western Himalayas (Himachal, Uttarakhand, Nepal, Sikkim) |
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| Eastern Himalayas (Tibet, Bhutan, Arunachal) | |||||
| Myanmar and Indo-Burmese border |
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| East and Southeast Asia |
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| Dubious (possible isolates) (Arunachal) |
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| Proposed groupings | |||||
| Proto-languages | |||||
Italics indicates single languages that are also considered to be separate branches. | |||||
| Mondzish |
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| Loloish (Yi) (Ngwi) |
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| Burmish |
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| Pai-lang | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| (Proto-languages) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||