Template:R:Campbell & Langacker 1978
Campbell, Lyle, Langacker, Ronald W. (1978 October) “Proto-Aztecan Vowels: Part III”, in International Journal of American Linguistics, volume 44, number 4, pages 262–279
Campbell, Lyle, Langacker, Ronald W. (1978 October) “Proto-Aztecan Vowels: Part III”, in International Journal of American Linguistics, volume 44, number 4, pages 262–279