Ononogbo Martins Chibuzor and Alaefule Fidelis Odinakachukwu 2025. Quality Service Delivery and Sustainability of Beverage Firms in South-East Nigeria. Journal of African Innovation and Advanced Studies. 10, 2 (Dec. 2025). DOI:https://doi.org/10.70382/ajaias.v10i2.060.