You have to try and by looking up Quranic verses to counter their beliefs, makes for better understanding of the Quran for oneself.
As for my book, I have spent 15years writing articles on numerous topics and three years getting volume I ready, with the aid of a number of very good people who have selfishly helped me achieve my goal of writing a book.
It is available from amazon at the lowest possible price I could publish it at and so far I have not ordered any spare copies to give away or post at random, so I leave it to all that want to read it to purchase it. 600 pages at a cheap price is a bargain for the effort that has been put into it. There is no kindle version at present as this can be copied and distributed FOC!
This is the UK link, copy the whole link or please check out ordering in any other country by typing Qur'anic Thoughts into amazon.