Lịngwistiks
Peter_Ladefoged
Alexander_John_Ellis
Mkpụrụ_akwụkwọ_Bekee
Mkpụrụ_akwụkwọ_izi_ihe_mbụ
Ụkpụrụ_mkpụrụ_akwụkwọ
Ịmata_ụdaolu
Ụda_na-ese_n'elu_mmiri
Orton-Gillingham
Nnyocha_ụdaume
Mkpụrụ_okwu_ụdaume