Somadi, and Vica Mariani S. “Penerapan Supply Chain Management Di PT Brataco Chemical Cabang Medan”. JURNAL NUSANTARA APLIKASI MANAJEMEN BISNIS 6, no. 2 (October 26, 2021): 242 - 252. Accessed January 20, 2022. https://ojs.unpkediri.ac.id/index.php/manajemen/article/view/15774.