U.S. International Trade in Goods and Services: June 2018 : Tables, BEA 18-40, CB 18-115
United States. Department of Commerce. "U.S. International Trade in Goods and Services: June 2018 : Tables, BEA 18-40, CB 18-115," United States Department of Commerce News (August 3, 2018). https://fraser.stlouisfed.org/title/6148/item/602648/content/xlsx/bea_newsreleases_20180803_tables-only, accessed on June 8, 2026.