Aspectos verbais e categorias discursivas da língua Palikur, Série Lingüística 7. 7-28.; Payne, David L. 1991. A classification of Maipuran (Arawakan) languages based on shared lexical retentions. In Derbyshire, Desmond C. & Geoffrey K. Pullum (eds.), Handbook of Amazonian languages 3, 355-499. Berlin: Mouton de Gruyter.; Matteson, Esther (ed.). 1972. Comparative studies in Amerindian languages. Janua Linguarum, series practica 127. 251 pp. The Hague: Mouton.