Sembiring, M. J.; Sasono, H. B. The Effects Of Ship Loading Cost (General Cargo), Unit Ship’s Call And Ship’s Gross Tonnage Towards Non-Migas (Oil And Gas) Exports, With Four Destination Countries To U.S.A, Japan, Australia, And United Kingdom At Port Of Surabaya, Indonesia In 2014-2016. ABR 2018, 6, 224-236.