Moody's
http://www.moodys.com/moodys/cust/AboutMoodys/AboutMoodys.aspx?topic=copyright

Fitch
http://reports.fitchratings.com/

DBRS
http://www.dbrs.com/about/disclaimer

Standard and Poor's
http://www2.standardandpoors.com/portal/site/sp/en/us/page.footer/terms_use/0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.html