Muangpan, Thanyaphat, and Pimonnart Peaiamamporn. “The Process Analysis in Purchasing 4.0: A Case Study of the Brass Strip Company”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences 43, no. 3 (September 29, 2023): 146–163. accessed September 16, 2026. https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/262801.