U.S. International Trade in Goods and Services: April 2013 : Tables, BEA 13-23, CB 13-97, FT-900 (13-04)
United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services: April 2013 : Tables, BEA 13-23, CB 13-97, FT-900 (13-04)," Bureau of Economic Analysis (BEA) News Releases (June 4, 2013). https://fraser.stlouisfed.org/title/6148/item/601547/content/xls/bea_newsreleases_20130604_tables-only-excel, accessed on May 16, 2025.