United States. Bureau of Economic Analysis. "Gross Domestic Product, Third Quarter 2020 (Second Estimate) | Corporate Profits, Third Quarter 2020 (Preliminary Estimates) : Technical Note, BEA 20-59," Bureau of Economic Analysis (BEA) News Releases (November 25, 2020). https://fraser.stlouisfed.org/title/6148/item/602934/content/pdf/bea_newsreleases_20201125a_technicalnote, accessed on March 27, 2025.