Osirim, M., and C. G. Wadike. “Empirical Evaluation of Financial Performance Differentials Between Quoted and Unquoted Firms in Nigeria: Asset Base and Revenue As Critical Determinants”. International Journal of Finance Research, vol. 4, no. 1, Apr. 2023, pp. 13 -24, doi:10.47747/ijfr.v4i1.1064.