stylistic:tone, information:classification
Sources

There are two main sources on Spartacus, both of which were written a century or more after his death: Plutarch of Chaeronea (46 AD - 119 AD) and Appian of Alexandria (95 AD – AD 165). The specific works are Life of Crassus (early Second Century AD) by Plutarch and Civil Wars (early to mid Second Century AD) by Appian. Out of all surviving sources on Spartacus, none were written by eyewitnesses and are all later reconstructions, nor were the sources written by slaves or former slaves, and the earliest source was at least a generation after the war.