Simmons, Donald C. (July 1956). "Oron Verb Morphology". Africa: Journal of the International African Institute. 26 (3): 250–264. doi:10.2307/1156343. JSTOR1156343. S2CID143251357.
Simmons, Donald C. (July 1956). "Oron Verb Morphology". Africa: Journal of the International African Institute. 26 (3): 250–264. doi:10.2307/1156343. JSTOR1156343. S2CID143251357.
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Simmons, Donald C. (July 1956). "Oron Verb Morphology". Africa: Journal of the International African Institute. 26 (3): 250–264. doi:10.2307/1156343. JSTOR1156343. S2CID143251357.