This is a notebook made in the typical notebook making way. which is to say...
cut paper twice as lone as you want the pages to be. Next punch holes in the center and sew along the holes, adding a thin piece of card board on top. then fold in half and press it closed over night. you should now have note book with a cover. Now glue thin strips of cardboard to simulate the tardis. paint blue and your done! Please post pics in the comments below!
UPDATE! 4/9/ 14
After looking at the prop I went back and completely remade the cover ( bottom pic)