SITUMORANG, Eduward. Pengaruh Ekspor dan Impor Terhadap Pertumbuhan Ekonomi Sumatera Utara. Journal Economy and Currency Study (JECS), [S. l.], v. 5, n. 2, p. 15–20, 2023. DOI: 10.51178/jecs.v5i2.1430. Disponível em: https://pusdikra-publishing.com/index.php/jecs/article/view/1430. Acesso em: 2 aug. 2025.