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/