Classification
- WALS
- NDe > Athapaskan
- Glottolog
- Athabaskan Eyak Tlingit > Athabaskan Eyak > Athabaskan > Pacificcoastathabaskan > Oregonathabaskan
- Ethnologue
- Eyak Athabaskan > Athabaskan > Pacificcoastathabaskan > Oregonathabaskan > Tolowa Chetco
Sources
- Bommelyn 1995
- Now you're speaking – Tolowa. Arcata: Center for Indian Community Development, Humboldt State University.