Produktivitas Kerja Unit Produksi PT Pertamina (Persero) Refinery Unit II Dumai. Jurnal Niara, [S. l.], v. 16, n. 2, p. 243–250, 2023. DOI: 10.31849/niara.v16i2.15837. Disponível em: https://journal.unilak.ac.id/index.php/nia/article/view/15837. Acesso em: 7 jul. 2026.