In the shapes menu, down towards the bottom is a copyright symbol you can use.
Also another way is to hold down the ALT key and type 0169 then let go of the ALT key and the © will appear. OR just highlight and copy the © from here and paste it on your page.
If you want to add any special characters to your book, in Windows click the start button and type in the search bar Character Map. If you click on the symbol, you can then click "select" and then "copy" of on the bottom right of the window, it will say the keystrokes to use you make it appear like explained above with the © symbol.