The main sources for knowledge of this language and hypotheses about its relationship with other languages, as well as its process of displacement, are:
- Constenla Umaña, Adolfo. 1984. "Huetar: observations on the materials available for its study and on the assumptions around its linguistic affinities." Journal of Philology and Linguistics of the University of Costa Rica 10 (2):3-18.
- Quesada Pacheco, Miguel Angel.1990. "The hollow tongue." In: Estudios de Lingüística Chibcha IX: 7-64.
- Quesada Pacheco, Miguel Angel.1992. "Position of the huetar in the chibchas languages." Estudios de Lingüística Chibcha 11: 71-100.
- Quesada Pacheco, Miguel Ángel. 1996. The huetars: history, language, ethnography and oral tradition. Cartago: Editorial Tecnología de Costa Rica.
- Quesada Pacheco, Miguel Angel.1998. Bone-headed tradions. Heredia: EUNA.
- Quesada Pacheco, Miguel Angel.1999. "Structure and narrative theme in the huetar oral tradition." In: Revista de Filología y Lingüística XXV (2).
- Quesada Pacheco, Miguel Angel.1997. Illustrated Abecedary of the Huetar Language. Heredia: Editorial of the National University.
