Nuri Rahayu Ningsih, Andria Zulfa, Bakhtiar Efendi, Lia Nazliana Nasution, and Rusiadi Rusiadi, “Analysis Of The Influence Of Port Export And Import Volume On Economic Growth In North Sumatera And West Sumatera Provinces”, IJECM, vol. 1, no. 4, pp. 413–438, Oct. 2024.