Piyanto, Muhammad Dadi, and Tulus Martua Sihombing. 2026. “Optimization of the Downloading Stage in Theory U Using a Turtle Diagram in the Packaging Design of Sticker Products at PT Decal Indonesia”. Jurnal Logic: Logistics & Supply Chain Center 4 (2):67-73. https://doi.org/10.33197/jlscc.v4i2.3457.