United States. Bureau of Economic Analysis. "Gross Domestic Product: Second Quarter 2018 (Second Estimate) | Corporate Profits: Second Quarter 2018 (Preliminary Estimate) : Highlights: GDP Increases in Second Quarter, BEA 18-43,"
Bureau of Economic Analysis (BEA) News Releases
(August 29, 2018).
https://fraser.stlouisfed.org/title/6148/item/602651/content/pdf/bea_newsreleases_20180829_release-highlights, accessed on March 21, 2025.