You are very unlikely to find anything that isn't from the Roman perspective, given that apart from archaeological work, we have only got sources from the Roman perspective.

My favourite book on this subject remains Adrian Goldsworthy's "The Punic Wars", which will set you back a mere £10 on Amazon.co.uk. Goldsworthy is a Roman history expert and works hard to fill in the gaps with educated guesswork. Nigel Bagnall's "The Punic Wars" (they're not terribly imaginative with these names) is decent but older than Goldsworthy's work, and Bagnall, a military man, has a distinct colouring to his positions that do not always consider the practicalities of the time. You can grab his book for a shocking thirteen quid. If you have to choose one, choose Goldsworthy.

There is an entry in the "companion" series from Wiley-Blackwell, edited by Hoyos. It is very good and covers a lot of diverse aspects of the period, with individual sections written by scholars.

Hoyos, D., ed. A Companion to the Punic Wars. Wiley-Blackwell 2011.