MBAH, E. E.; OKEKE, C. O. Vowel Raising in Nkpor Dialect: A Pattern of Sound Change. Linguistik Online, [S. l.], v. 59, n. 2, 2014. DOI: 10.13092/lo.59.1146. Disponível em: https://bop.unibe.ch/linguistik-online/article/view/1146. Acesso em: 21 mai. 2022.