Saya mau tau Rujukan dari Biogas. Jelaskan dalam bahasa melayu

Updated Guidebook on Biogas Development. United Nations, New York, (1984) Energy Resources Development Series No. 27. p. 178, 30 cm.

Book: Biogas from Waste and Renewable Resources. WILEY-VCH Verlag GmbH & Co. KGaA, (2008) Dieter Deublein and Angelika Steinhauser

A Comparison between Shale Gas in China and Unconventional Fuel Development in the United States: Health, Water and Environmental Risks by Paolo Farah and Riccardo Tremolada. This is a paper presented at the Colloquium on Environmental Scholarship 2013 hosted by Vermont Law School (11 October 2013)

Woodhead Publishing Series. (2013). The Biogas Handbook: Science, Production and Applications.