United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services: February 2014 : Full Release, BEA 14-15, CB 14-54, FT-900 (14-02)," Bureau of Economic Analysis (BEA) News Releases (April 3, 2014). https://fraser.stlouisfed.org/title/6148/item/602095/content/pdf/bea_newsreleases_20140403, accessed on July 12, 2025.