United States. Bureau of Economic Analysis. "National Income and Product Accounts | Gross Domestic Product, Second Quarter 2019 (Advance Estimate) and Annual Update : Highlights: GDP Increases in Second Quarter, BEA 19-36," Bureau of Economic Analysis (BEA) News Releases (July 26, 2019). https://fraser.stlouisfed.org/title/6148/item/602809/content/pdf/bea_newsreleases_20190726_release-highlights, accessed on March 15, 2025.