Ziemendorff M, Valqui Culqui J, Ziemendorff S. Methodological remarks on the study of extinct languages in the Peruvian Northeast: the case of Chacha. Letras (Lima) [Internet]. 2023May31 [cited 2024May18];94(139):16-2. Available from: http://revista.letras.unmsm.edu.pe/index.php/le/article/view/2324