Rianda, Aditya, Sri Eka Oktafani, Ikhsan Akmal, Zulfa Khairani, and M. Gilang. 2011. “Sistem Rantai Pasok Produk Obat-Obatan”. Jurnal Optimasi Sistem Industri 10 (2). Padang, ID:160-65. https://doi.org/10.25077/josi.v10.n2.p160-165.2011.