What can I name my books within my book?

You could throw in a few clic books to their reading mixture. Something by the Bronte Sisters. If it is old, it is probably safe. Check up on internet about titles and copyrights. I don't think you can copyright a title. So many books have the same title. Made up names----- Twilight Monsters, Lunch With A Vampire, Snog Club, Dreams on My Pillow.