Cáceres, Natalia(2011),“öwattö”, inGrammaire Fonctionnelle-Typologique du Ye’kwana, Lyon, page 114
Hall, Katherine(2007),“ewɨ̄tɨ”, inMary Ritchie Key & Bernard Comrie, editors,The Intercontinental Dictionary Series, Leipzig: Max Planck Institute for Evolutionary Anthropology, published 2021