Pache, Matthias (2023-01-01). "Pech and the Basic Internal Classification of Chibchan". International Journal of American Linguistics. 89 (1): 81–103. doi:10.1086/722240. ISSN0020-7071.
Pache, Matthias (2023-01-01). "Pech and the Basic Internal Classification of Chibchan". International Journal of American Linguistics. 89 (1): 81–103. doi:10.1086/722240. ISSN0020-7071.