United States. Department of Commerce. "U.S. International Trade in Goods and Services: November 2013, BEA 14-01, CB 14-02, FT-900 (13-11),"
United States Department of Commerce News
(January 7, 2014).
https://fraser.stlouisfed.org/title/6148/item/602081, accessed on June 5, 2026.