United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services: August 2017 : Full Release, BEA 17-54, CB 17-165, FT-900 (17-08)," Bureau of Economic Analysis (BEA) News Releases (October 5, 2017). https://fraser.stlouisfed.org/title/6148/item/602525/content/pdf/bea_newsreleases_20171005, accessed on March 26, 2025.