Manaster-Ramer, Alexis and Ralph C. Blight. 1993. Uto-Aztecan* ps (and* sp, too?). International Journal of American Linguistics, 59(1): 38-43.
From SUALEX
Manaster-Ramer, Alexis and Ralph C. Blight. 1993. Uto-Aztecan* ps (and* sp, too?). International Journal of American Linguistics, 59(1): 38-43.