Olson (2004:233); association with Niger-Congo uncertain. Olson, Kenneth S. (2004), "Mono"(PDF), Journal of the International Phonetic Association, 34 (2): 233–238, doi:10.1017/S0025100304001744
Olson (2004:233); association with Niger-Congo uncertain. Olson, Kenneth S. (2004), "Mono"(PDF), Journal of the International Phonetic Association, 34 (2): 233–238, doi:10.1017/S0025100304001744