Onwukwe, Chimaobi. “Diphthongization in Ngwa Igbo? Evidence from Phonological Correlates of Age Differentiation”. Journal of The Linguistic Association of Nigeria 21, no. 2 (September 1, 2018): 108–117. Accessed April 28, 2024. https://jolan.com.ng/index.php/home/article/view/164.