Mycelia Paradise, Ag. Isjudarto, and H. Kresno. “Economic Evaluation Economic Evaluation of Andesit Processing Plant at PT. Calvary Abadi in Somopuro Village Jogonalan Klaten”. ReTII (November 4, 2019): 41–47. Accessed April 3, 2025. https://journal.itny.ac.id/index.php/ReTII/article/view/1453.