Echeverría, Max S. and Contreras, Heles. 1965. Araucanian Phonemics. International Journal of American Linguistics 31. 132–135.
@article{echeverriacontreras1965, author = {Echeverría, Max S. and Contreras, Heles}, journal = {International Journal of American Linguistics}, number = {2}, pages = {132–135}, title = {Araucanian Phonemics}, volume = {31}, year = {1965} }