Johnson, Orville E., Stephen H. Levinson and Wheeler, Alva. 1990. Gramática secoya. Cuadernos Etnolingü'isticos. 13–19.
@article{2059_johnsoneta1990, author = {Johnson, Orville E., Stephen H. Levinson and Wheeler, Alva}, journal = {Cuadernos Etnolingü'isticos}, number = {11}, pages = {13–19}, title = {Gramática secoya}, year = {1990} }