United States. Bureau of Economic Analysis. "Gross Domestic Product (Third Estimate), Corporate Profits (Revised Estimate), Second Quarter 2023 and Comprehensive Update : Historical Comparisons, BEA 23-43,"
Bureau of Economic Analysis (BEA) News Releases
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https://fraser.stlouisfed.org/title/6148/item/652947/content/pdf/bea_newsreleases_23-43_20230928_historical, accessed on March 12, 2025.