- Author: Alfredo Barrera Vásquez
- Language: Spanish
- Year: 1980
Gramática ch'ol
pdf
- Author: Warkentin V. Scott R.
- Language: Portuguese
- Author: Max George.
- Language: Indigenous-English
- Author: Navarrete Javier Abelardo Gómez
- Language: Spanish
- Year: 2009
- Author: Талах В.М.
- Language: Ukrainian
- Author: Brinton D.G.
- Language: Indigenous-English