Gross Domestic Product, 4th Quarter and Year 2020 (Advance Estimate) : Key Source Data and Assumptions, BEA 21-02
United States. Department of Commerce. "Gross Domestic Product, 4th Quarter and Year 2020 (Advance Estimate) : Key Source Data and Assumptions, BEA 21-02," United States Department of Commerce News (January 28, 2021). https://fraser.stlouisfed.org/title/6148/item/600347/content/xlsx/bea_newsreleases_20210128_keysourcedata, accessed on June 4, 2026.