Muhammad Abdun-Nafay wrote:
I have got another idea, are the pictures of Wikipedia in public domain? I will add these pictures, no problem.
You can't copy photos from Wikipedia and use them any more than you can take text from it and publish it as your own work. I'm not saying that's what you have done, but plenty of others have. Unless a picture specifically says it is in the public domain or free for commercial use, you will need written permission from the copyright holder.