Classification
- WALS
- TK > Kam Tai
- Glottolog
- Tai Kadai > Kam Tai > Kam Sui > Then Mms > Maonan Mak Sui
- Ethnologue
- Kra Dai > Kam Tai > Kam Sui
Sources
- Peiros 1998
- Comparative Linguistics in Southeast Asia. Pacific Linguistics C-142. Canberra: Australian National University.