1. Van Gerpen, J., The Basics of Diesel Engines and Diesel Fuels. [ed.] G. Knothe, J. Van Gerpen and J. Krahl. The Biodiesel Handbook. Champaign, Illinois: AOCS Press, 2004, pp. 25–33.
2. Regulation of Ministry of Energy and Mineral Resources No. 12/2015, Third Amendment on Regulation of Ministry of Energy and Mineral Resources No. 32/2008 about Supply, Utilization, and Trade System of Biofuel as other fuel, in Indonesian: Perubahan ketiga atas Peraturan Menteri Energi dan Sumber Daya Mineral Nomor 32 Tahun 2008 Tentang Penyediaan, Pemanfaatan, dan Tata Niaga Bahan Bakar Nabati (Biofuel) sebagai Bahan Bakar Lain.
3. Decree of Ministry of Energy and Mineral Resources No. 3239/2015, Biofuel price index blended into certain fuel and type of special mandatory fuel, in Indonesian : Harga Indeks Pasar Bahan Bakar Nabati (Biofuel) yang Dicampurkan ke dalam Jenis Bahan Bakar Minyak Tertentu dan Jenis Bahan Bakar Minyak Khusus Penugasan.