United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services: January 2008, BEA 08-08, CB 08-42, FT-900 (08-01)," Bureau of Economic Analysis (BEA) News Releases (March 11, 2008). https://fraser.stlouisfed.org/title/6148/item/600441, accessed on August 16, 2024.