Sinkala, H. ., F. Simui, and G. . Muleya. “A Plethora of Roles Played by Teacher Unions in Fostering Improved Learning Environment in Schools in Zambia”. Advances in Social Sciences Research Journal, vol. 9, no. 9, Sept. 2022, pp. 450-64, doi:10.14738/assrj.99.13112.