Sunarto, Hari. “Menuju Integrasi Peng Awasan Pupuk Bersubsidi: Sebuah Rancang Bangun Prototipe E-Suplay Chain Management”. Jurnal Manajemen 18, no. 1 (February 25, 2014): 51–68. Accessed May 20, 2024. http://ecojoin.org/index.php/EJM/article/view/377.