K. Ishola, O. A. Olawuyi, A. A. Bello, R. K. Etim, P. Yohanna, and J. E. Sani, “Review of Agricultural Waste Utilization as Improvement Additives for Residual Tropical Soils”, AZOJETE, vol. 15, no. 3, pp. 733-749, Sep. 2019.