2023. Analysis of Self-Estimated Pricing (HPS) in the Procurement Department Units 1&2 PT. PJB UP Paiton: Analisis Penentuan Harga Perkiraan Sendiri (HPS) di Bagian Pengadaan Unit 1&2 PT. PJB UP Paiton . PROZIMA (Productivity, Optimization and Manufacturing System Engineering). 7, 1 (July 2023), 59–72. DOI:https://doi.org/10.21070/prozima.v7i1.1612.