I. Yahaya, M. Shuwa, S. S. Dumbulwa, U. T. Abba, and A. M. Bulama, “Organic Waste Valorisation in The Circular Bioeconomy: A Critical Review of Composting, Anaerobic Digestion, and Technological Integration”, AZOJETE, vol. 22, no. 3, pp. 831-845, Sep. 2026.