ABD Hükümeti /Resmi Kaynaklar
ABD Gümrük Tarifeleri
http://www.usitc.gov/taffairs.htm
http://dataweb.usitc.gov/scripts/tariff2003.asp
GSP-Genel Preferanslar Sistemi
http://www.ustr.gov/reports/gsp
Department of State Economic and Trade Policy
http://www.state.gov/www/issues/economic/
Export-Import Bank of the United States
http://www.exim.gov/
Federal Trade Commission
http://www.ftc.gov/index.html
Internal Revenue Service Tax Publications
http://www.irs.ustreas.gov
OPIC - Overseas Private Investment Corporation
http://www.opic.gov
U.S. Agency for International Development
http://www.info.usaid.gov/
U.S. Patent and Trademark Office
http://www.uspto.gov/