Dixon, R. M. W. and Alexandra Aikhenvald , eds., (1999) The Amazonian Languages. Cambridge University Press. Everett, D. L. (1992) A Língua Pirahã e a Teoria da Sintaxe:Descrição, Perspectivas e Teoria (The Pirahã Language and Syntactic Theory:Description, Perspectives and Theory). Ph.D. thesis. (in...