OKONO, Usoro Mark. The Articulation Of Twelve Pure Vowels In The English Language Of Nigerian Undergraduates: A Case Study Of The Department Of English Akwa Ibom State University: Sapientia Global Journal of Arts, Humanities and Development Studies (SGOJAHDS), Vol 6, No 4. Afrischolar Discovery Repository (Annex), [S. l.], 2024. DOI: 10.60951/afrischolar-153. Disponível em: https://publications.afrischolar.net/index.php/home/article/view/153.. Acesso em: 18 oct. 2024.