United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services - August 2006 : Highlights: Trade Gap Widens in August 2006, CB 06-149, BEA 06-46, FT-900 (06-08),"
Bureau of Economic Analysis (BEA) News Releases
(September 29, 2006).
https://fraser.stlouisfed.org/title/6148/item/598617/content/pdf/bea_newsreleases_20061012_hi, accessed on June 14, 2025.