Akano, R. D., and J. A. Akindele. “Production and Interpretation of Accentual Intonation Tunes in L2 Acquisition: Implications for Nigerian Spoken English Accent”. 2023. Ghana Journal of Linguistics, vol. 12, no. 1, Sept. 2023, pp. 73-91, doi:10.4314/gjl.v12i1.515.