Gross Domestic Product: First Quarter 2018 (Third Estimate) | Corporate Profits: First Quarter 2018 (Revised Estimate) : Tables, BEA 18-31
United States. Department of Commerce. "Gross Domestic Product: First Quarter 2018 (Third Estimate) | Corporate Profits: First Quarter 2018 (Revised Estimate) : Tables, BEA 18-31," United States Department of Commerce News (June 28, 2018). https://fraser.stlouisfed.org/title/6148/item/602639/content/xlsx/bea_newsreleases_20180628_tables-only, accessed on May 31, 2026.