Cena, K.P.G, J.P E. Gabato, R.A. Nacario, M.A. Ofianga, A.O. Razo, and Andrew Dela Cruz. 2019. “Freight Management System - Core 2: Service Network, Service Provider, Customer Relationship Management, Standard Operational Procedure, Schedule and Rates”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research 1 (1). https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/2179.