United States. Department of Commerce. "U.S. International Trade in Goods and Services: February 2004, CB 04-59, BEA 04-15, FT-900 (04-02),"
United States Department of Commerce News
(April 14, 2004).
https://fraser.stlouisfed.org/title/6148/item/597914, accessed on May 31, 2026.