“Meningkatkan Layanan Catering Melalui Metode Lean Dan Six Sigma (Studi Kasus UMKM Bilqis Catering)”. JURNAL LOGISTICA 1, no. 2 (June 28, 2023): 22–29. Accessed June 13, 2026. https://journal.iteba.ac.id/index.php/logistica/article/view/94.