H. Y. Ismail, A. A. Farouq, A. B. Rabah, A. B. Muhammad, and R. U. Aliyu, “Effect of Soil Contamination with Crude Petroleum on Cowpea: An Insight into the Prospects of Crop Production in Nigerian Frontier Basins”, jeas, vol. 2, no. 2, pp. 50–62, Nov. 2021, doi: 10.32996/jeas.2021.2.2.5.