United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services: May 2015 : Highlights: May 2015 Trade Gap is $41.9 Billion, BEA 15-33, CB 15-119, FT-900 (15-05)," Bureau of Economic Analysis (BEA) News Releases (July 7, 2015). https://fraser.stlouisfed.org/title/6148/item/602251/content/pdf/bea_newsreleases_20150707_release-highlights-monthly, accessed on March 22, 2025.