1.
Maryani E, Jaqin C, Tampubolon S. A Systematic Literature Review of Six Sigma Approach in Manufacturing and Services Industries in Indonesia. IJIEM [Internet]. 2025 Mar. 20 [cited 2026 May 28];5(3):875-84. Available from: https://training-ojs3-publikasi.mercubuana.ac.id/index.php/ijiem/article/view/25250