Ugwoke, Jude Chijioke, et al. “Igbo Apprenticeship System, Business Volatility, and Sustainability of Enterprises in Plateau State”. Scholarly Journal of Management Sciences Research, vol. 4, no. 4, Sept. 2025, pp. 61-69, https://www.openjournals.ijaar.org/index.php/sjmsr/article/view/1467.