United States. Bureau of Economic Analysis. "Gross Domestic Product, First Quarter 2019 (Second Estimate) | Corporate Profits, First Quarter 2019 (Preliminary Estimate) : Full Release, BEA 19-22," Bureau of Economic Analysis (BEA) News Releases (May 30, 2019). https://fraser.stlouisfed.org/title/6148/item/602795/content/pdf/bea_newsreleases_20190530, accessed on March 19, 2025.