United States. Bureau of Economic Analysis. "Gross Domestic Product (Second Estimate), Corporate Profits (Preliminary Estimate), Second Quarter 2021 : Highlights: Gross Domestic Product (Second Estimate), Corporate Profits (Preliminary Estimate), Second Quarter 2021, BEA 21-40,"
Bureau of Economic Analysis (BEA) News Releases
(August 26, 2021).
https://fraser.stlouisfed.org/title/6148/item/605027/content/pdf/bea_newsreleases_20210826_highlights, accessed on March 19, 2025.