U.S. International Trade in Goods and Services: March 2019 : Tables, BEA 19-20, CB 19-60
United States. Department of Commerce. "U.S. International Trade in Goods and Services: March 2019 : Tables, BEA 19-20, CB 19-60," United States Department of Commerce News (May 9, 2019). https://fraser.stlouisfed.org/title/6148/item/602793/content/xlsx/bea_newsreleases_20190509_tables-only, accessed on June 5, 2026.