| Chicago Board of Trade | http://www.cbot.com |
| Chicago Mercantile Exchange | http://www.cme.com |
| Commodity Futures Trading Commission | http://www.cftc.com |
| IntercontinentalExchange (ICE) | https://www.theice.com |
| London International Financial Futures and Options Exchange | http://www.liffe.com |
| National Futures Association | http://www.nfa.futures.org |
| New York Board of Trade | http://www.nybot.com |
| New York Mercantile Exchange | http://www.nymex.com |