Cáceres, Natalia (2011) “a'nö”, in Grammaire Fonctionnelle-Typologique du Ye’kwana[1], Lyon
Hall, Katherine (2007) “-aʔnə”, in Mary Ritchie Key & Bernard Comrie, editors, The Intercontinental Dictionary Series[2], Leipzig: Max Planck Institute for Evolutionary Anthropology, published 2021