United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services: September 2016, BEA 16-60, CB 16-182, FT-900 (16-09),"
Bureau of Economic Analysis (BEA) News Releases
(November 4, 2016).
https://fraser.stlouisfed.org/title/6148/item/602379, accessed on January 16, 2026.