National Income and Product Accounts | Gross Domestic Product: Second Quarter 2018 (Advance Estimate) | Comprehensive Update: 1929 Through First Quarter 2018 : Tables, BEA 18-37
United States. Department of Commerce. "National Income and Product Accounts | Gross Domestic Product: Second Quarter 2018 (Advance Estimate) | Comprehensive Update: 1929 Through First Quarter 2018 : Tables, BEA 18-37," United States Department of Commerce News (July 27, 2018). https://fraser.stlouisfed.org/title/6148/item/602645/content/xlsx/bea_newsreleases_20180727_tables-only, accessed on June 2, 2026.