Teo (2012), p. 369. Teo, Amos B. (2012), "Sumi (Sema)", Journal of the International Phonetic Association, 42 (3): 365–373, doi:10.1017/S0025100312000254
Teo (2012), p. 368. Teo, Amos B. (2012), "Sumi (Sema)", Journal of the International Phonetic Association, 42 (3): 365–373, doi:10.1017/S0025100312000254
Teo (2012), p. 366. Teo, Amos B. (2012), "Sumi (Sema)", Journal of the International Phonetic Association, 42 (3): 365–373, doi:10.1017/S0025100312000254