Lev Michael. 2014. On the Pre-Columbian Origin of Proto-Omagua-Kokama. Journal of Language Contact 7. 309-344.
@article{315979, author = {Lev Michael}, journal = {Journal of Language Contact}, number = {2}, pages = {309-344}, title = {On the Pre-Columbian Origin of Proto-Omagua-Kokama}, volume = {7}, year = {2014} }