↑Martins, Valteir. 2005. Reconstrução Fonológica do Protomaku Oriental. LOT Dissertation Series. 104. Utrecht: LOT Netherlands Graduate School of Linguistics. (Doctoral dissertation, Vrije Universiteit Amsterdam).
↑Dixon, R. M. W. 2004. Proto-Arawá Phonology. Anthropological Linguistics 46: 1-83.