Sofiyanto, Sofiyanto, Tony Yulianto, and Faisol Faisol. “Penerapan Metode Goal Programming Dalam Mengoptimalkan Pendistribusian Gas LPG Di SPPBE Tlanakan”. Zeta - Math Journal 6, no. 2 (November 26, 2021): 48–53. Accessed January 25, 2026. http://journal.uim.ac.id/index.php/zeta/article/view/1268.