[1]
Kholilul Kholik et al. 2022. The Role of Leadership on Sustainable Improvement in Improving Product Quality in the Division of PT. North Sumatra Coal Inalum. International Journal of Health, Economics, and Social Sciences (IJHESS). 4, 1 (Jan. 2022), 48–56. DOI:https://doi.org/10.56338/ijhess.v4i1.2164.