Looking for Sources on Brennus' Sack of Rome

[Romano-Dacis]

I'm undertaking an essay for a history course and was wondering if anyone could help me with this topic. I'm particularly interested in which primary sources mention the Gallic sack of Rome. I know Livy mentions it in book 5. I've also heard that Polybius and Diodorus Siculus mentions it but I have not been able to find the passages in their books.

Any help finding these sources, and even more obscure ones, is greatly appreciated.

[MAXlMUS]

book 9 in polybius
http://penelope.uchicago.edu/Thayer/...lybius/9*.html

[Romano-Dacis]

book 9 in polybius
http://penelope.uchicago.edu/Thayer/...lybius/9*.html

I think Book 9 is talking about the wrong Brennus, unless this is the same leader of the Senones in 390BC.

EDIT: I would like to add that any good modern sources are also appreciated, but I generally find ancient sources harder to find.

[DAVIDE]

Polibius - Histories II, Livius - Ab Urbe Condita V, Diodorus Siculus - XIV, Plutarch - Camillus, Euthropius - Breviarium Ab Urbe Condita I

[Xellos_Moon]

i dont think youre gonna find them because he also burned those