1. BP Stat. Rev. World Energy , ed. D. Spencer , 2019 , pp. 1–69
2. U.S. Energy Information Administration , International Energy Outlook 2016 , 2016 , vol. 0484 ( 2016 )
3. F. S. Fabiani Appavou , A.Brown , B.Epp , D.Gibb , B.Kondev , A.McCrone , H. E.Murdock , E.Musolino , L.Ranalder , J. L.Sawin , K.Seyboth and J.Skeen , REN21 - 2019 Global Status Report , 2019
4. United Nations Development Programme, World Energy Assessment , Energy and the challenge of Sustainability , 2000
5. V. Smil , General Energetics: Energy in the Biosphere and Civilization , John Wiley , New York , 1991