Sadikin, Marendra Cahya. “A Long Road to the Development of Bio-Fuel in Indonesia”. Jurnal Ilmiah Hubungan Internasional 10, no. 1 (September 3, 2014). Accessed April 29, 2024. https://journal.unpar.ac.id/index.php/JurnalIlmiahHubunganInternasiona/article/view/1051.