Fast, Gerhard and Fast, Ruby. 1981. Introducción al idioma achuar. (Documento de Trabajo, 20.) Yarinacocha: Ministerio de Educación and Summer Institute of Linguistics.
@book{Fast-and-Fast-1981, address = {Yarinacocha}, author = {Fast, Gerhard and Fast, Ruby}, publisher = {Ministerio de Educación and Summer Institute of Linguistics}, series = {Documento de Trabajo}, title = {Introducción al idioma achuar}, volume = {20}, year = {1981}, iso_code = {acu}, olac_field = {general_linguistics; syntax; semantics; morphology; typology}, wals_code = {acu} }