SIRAIT, J. A.; NAINGGOLAN, N. P.; OCTAVIANI, W.; PURBA, B. Determinasi Pengangguran Terbuka di Sumatera Utara Tahun 2018-2023: Peran IPM, Usia Produktif, dan Pertumbuhan Ekonomi. RIGGS: Journal of Artificial Intelligence and Digital Business, [S. l.], v. 4, n. 2, p. 2388–2395, 2025. DOI: 10.31004/riggs.v4i2.852. Disponível em: https://journal.ilmudata.co.id/index.php/RIGGS/article/view/852. Acesso em: 1 feb. 2026.