Parapat, David, and Montayana Meher. “Perlindungan Hukum Pengguna Jasa Kepabeanan (PPJK): Studi Di PT. Logistik Ekspresindo Utama, Medan”. LawSains Journal 1, no. 2 (September 25, 2025). Accessed August 21, 2026. https://journal.prisains.com/index.php/law/article/view/13.