A few years ago, seeking something to read on the beach, I popped into the bookshop at the Jomtien end of Dongtan Beach. I found there a copy of "The politically incorrect guide to Islam (and the crusades)" by Robert Spencer (Regnery Publishing, 2005). As it is very closely based on original quotations - though no doubt selectively chosen ones - from the Koran and the Hadith, it is a good source of material for arguments such as this one, as well as very accessible and a very entertaining read!