Fadli, M.R. and Sulistiyowati, W. 2021. Optimization of Pipe Production Scheduling in Line 18 Using First Come First Serve (Fcfs), Earlier Due Date (Edd), Short Process Time (Spt) Methods (Case Study: Pt Wtur). PROZIMA (Productivity, Optimization and Manufacturing System Engineering). 3, 2 (Mar. 2021), 44-54. DOI:https://doi.org/10.21070/prozima.v3i2.1268.