Tantarangsri, C., and P. Apivatanagul. “Analysis and Improvement of Inventory Management Using the Economic Order Quantity Concept: A Case Study of a Gadget Import Company”. Rajapark Journal, vol. 19, no. 63, June 2025, pp. 515-33, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/280603.