AFANDI, Ridwan; ILHAM, Muh.; ACHMAD, Mansyur; LUKMAN, Sampara. Implementation of Free Trade and Free Port Policy in Investment Improvement at Batam City Riau Islands Province. Journal of Humanities and Social Sciences Studies, [S. l.], v. 7, n. 5, p. 31–46, 2025. DOI: 10.32996/jhsss.2025.7.5.4. Disponível em: https://al-kindipublishers.org/index.php/jhsss/article/view/9506. Acesso em: 29 mar. 2026.