What titles?
http://www.amazon.com/Pity-War-Explaining-World/dp/0465057128/ref=sr_1_5?ie=UTF8&qid=1418847364&sr=8-5&keywords=niall+ferguson
http://www.amazon.com/What-If-Foremost-Military-Historians/dp/0425176428/ref=sr_1_6?ie=UTF8&qid=1418847469&sr=8-6&keywords=alternative+history+what