Aqila, A. D., Sibuea, S. R., & Harahap, B. (2026). Analisis Pengendalian Kualitas CPO Menggunakan Metode Six Sigma di PT. Socfindo Matapao . RIGGS: Journal of Artificial Intelligence and Digital Business, 5(1), 15244–15251. https://doi.org/10.31004/riggs.v5i1.8124