Sari Afrilya Purba, Milla Naeruz, Azhar Apriandi. Pengaruh Ekspor Dan Impor Terhadap Neraca Perdagangan Provinsi Sumatera Utara. prosainteks [Internet]. 2025Jul.6 [cited 2026Aug.27];3(1):103-8. Available from: https://www.sainteks.seminars.id/prosainteks/article/view/395