Essien, Eyo Emmanuel, and Edim Eka James. “Physical Distribution Strategies and the Marketing Performance of Bottled Water Companies in Calabar, Nigeria”. Gusau International Journal of Management and Social Sciences 7, no. 1 (June 18, 2024): 76–98. Accessed October 14, 2025. https://gijmss.com.ng/index.php/gijmss/article/view/218.