1. Ahmad M, Jan HA, Sultana S, Zafar M, Ashraf MA, Kifayat U (2015) Prospects for the production of biodiesel in Pakistan. In: Krzysztof Biernat (eds) Environmental engineering. Biofuels-status and prospective (ISBN 978-953-51-2177-0)
2. Ali T, Huang J, Yang J (2012) An overview of biofuels sector of Pakistan: status and policies. Int J Ecol Res 3(1):69–76
3. Bentley R (2002) Global oil and gas depletion: an overview. Energy Policy 30:189–205
4. Biofuel and renewable energy in the United States (2013). https://en.wikipedia.org/wiki/Biofuel_in_the_United_States. Retrieved 7 Feb 2018
5. Biofuels Digest (2015) New biobased projects around the world. www.biofuelsdigest.com/bdigest/2015/11/17/new-biofuels-projects-around-the-world/. Retrieved 24 Dec 2017