U. Oyeagu, K. T. Ughamba, O. H. Ekwem, F. S. O. Ugwu, and C. C. Ezeh, “Penicillium citrinum: A Promising Candidate for Protease Production: ttp://www.doi.org/10.26538/tjnpr/v7i9.37”, TJNPR, vol. 7, no. 9, pp. 4092–4098, Oct. 2023.