Anyanwu, A. C., P. Nnamocha, and J. K. Naakuu. “External Debt Service and Nigeria’s Macroeconomic Performance (1981-2019)”. European Journal of Accounting, Finance and Investment, vol. 8, no. 1, Jan. 2022, pp. 31-45, https://cirdjournals.com/index.php/ejafi/article/view/573.