1. Dawn of a New Era. Oil and Gas Price Benchmarking as at 30 June 2020https://www.pwc.co.uk/oil-gas/assets/oil-gas-commodity-price-benchmarking.pdf
2. Brent Oil Futures Historical Datahttps://www.investing.com/commodities/brent-oil-historical-data
3. BP Statistical Review of World Energy 2020, 69th ed.; London, UKhttps://www.bp.com/content/dam/bp/business-sites/en/global/corporate/pdfs/energy-economics/statistical-review/bp-stats-review-2020-full-report.pdf
4. The future of oil supply