Slaves and Freemen from PBS
Resisting Slavery in ancient Rome from the BBC
A Slave Society from the BBC
Slavery in the Roman Republic Original (Primary) Sources about Roman Slavery from The Ancient History Sourcebook at Fordham University
Slavery in the Roman Republic : Numbers and Origins by John Madden, University College, Galway, Ireland
How to keep a slave in ancient Rome from eyewitnesstohistory.com