Kpalap, Sylvester Bebari Silva, and A. A. Obafemi. “EVALUATION OF EFFICIENCY IN THE OPERATIONS OF PUBLIC AND PRIVATE ROAD TRANSIT SERVICES IN PORT HARCOURT REGION, NIGERIA”. European Journal of Humanities and Educational Advancements, vol. 2, no. 12, Dec. 2021, pp. 150-7, https://scholarzest.com/index.php/ejhea/article/view/1668.