Muzakar, Difa, SuardikaIda Bagus, and Sujianto Sujianto. “STUDI KELAYAKAN INVESTASI BISNIS PADA PROYEK PENGOLAHAN KELAPA SAWIT DI INDRAGIRI HILIR , RIAU ( Studi Kasus Di PT. Risman Scham Palm Indonesia )”. Jurnal Valtech 3, no. 2 (September 18, 2020): 131-136. Accessed May 3, 2024. https://ejournal.itn.ac.id/index.php/valtech/article/view/2789.