1. Directorate General of Plantation Estates, Indonesia. The Rise of Palm Oil Plantation (in Indonesian). http://ditjenbun.pertanian.go.id/berita-362-pertumbuhan-areal-kelapa-sawit-meningkat.html (accessed April 10, 2014).
2. USDA Indonesia. Indonesia Oilseeds and Products Annual 2013. http://usdaindonesia.org/?p=1754 (accessed April 2014).
3. Palm Oil
4. Development of equations for estimating energy requirements in palm-kernel oil processing operations
5. USDA Indonesia. Indonesia Oilseeds and Products Annual 2013 (in Indonesian). http://gain.fas.usda.gov/Recent%20GAIN%20Publications/Oilseeds%20and%20Products%20Annual_Jakarta_Indonesia_3-28-2013.pdf (accessed June 2, 2014).