Bertolotti, V., and M. Coll. “Contact and Loss: Spanish and Indigenous Languages in the Río De La Plata Between the 16th and the 19th Century”. Boletín De Filología, vol. 48, no. 2, Jan. 2013, pp. Pág. 11 - 30, https://revistasaludpublica.uchile.cl/index.php/BDF/article/view/30238.