Jae-Sung Ji, Jae-Yong Lee, Soo-Yong Park, and Dong-Hyung Lee,. 2023. “Management Improvement through Total Cost Reduction Activi Ty in a Small and Medium Cosmetic Manufacturing Company: A Case Study”. Elementary Education Online 20 (3):722-28. https://ilkogretim-online.org./index.php/pub/article/view/1883.