Joto, B. M., and D. S. O. Odock. “Effect of Logistics Outsourcing on the Performance of Dairy Processing Firms in Kenya”. Journal of Procurement & Supply Chain, vol. 3, no. 2, Mar. 2019, pp. 17-35, https://stratfordjournalpublishers.org/journals/index.php/journal-of-procurement-supply/article/view/260.