1. K. Schwab, The Fourth Industrial Revolution, World Economic Forum, 2016.
2. BP – British Petroleum. Statistical Review of World Energy. United Kingdom. 2021. 〈https://www.bp.com/content/dam/bp/business-sites/en/global/corporate/pdfs/energy-economics/statistical-review/bp-stats-review-2021-full-report.pdf〉. Accessed: 27 july 2021.
3. Projection of world fossil fuels by country;Mohr;Fuel,2015
4. A critical review of comparative global historical energy consumption and future demand: the story told so far;Ahmad;Energy Rep.,2020
5. Global Warming: The Complete Briefing, Fifth ed;Houghton,2015