Seifart, Frank and Payne, Doris L. 2007. Nominal classification in the North West Amazon: Issues in areal diffusion and typological characteristics. International Journal of American Linguistics 73. 281–287.
@article{seifart2007nominal, author = {Seifart, Frank and Payne, Doris L.}, journal = {International Journal of American Linguistics}, number = {4}, pages = {281–287}, title = {Nominal classification in the North West Amazon: Issues in areal diffusion and typological characteristics}, volume = {73}, year = {2007} }