Fitra, Adi, Abdul Rochim, and Deri Maryadi. 2025. “Lean Six Sigma in Supply Chain Management: A Systematic Literature Review of Research Trends and Performance Impacts (2020–2025)”. JIeTri : Journal of Industrial Engineering Tridinanti 3 (02):01-07. https://ejournal.univ-tridinanti.ac.id/index.php/Jietri/article/view/1696.