Thus, if the books you want to delete are purchased ones and you really don't want to see them existing on your bookshelf, all you can do it to hide these purchased books by going to Sort By > Hide iCloud Books in your library. The common problem 'can't delete books from iBooks' attributes to this factor. Note: What I have to mention is that, for imported books or PDFs on your iPhone/iPad and Mac, you can delete them permanently from your device, while for books purchased from iBooks Store, you can just remove them from your device but not from iCloud. If so, you are in the right place to learn how to do it. Sometimes, to free up space on your iPhone/iPad/Mac or remove unwanted files from your device, you may need to delete books from iBooks.
