Currently Being ModeratedJan 6, 2014 8:31 PM (in response to Kerily)
When you delete them and see the iCloud symbol, they aren't stored in your personal iCloud account. What you are seeing are links to your previously purchased books in the iBooks store so you can redownload them again if you ever want to. You can't delete anything from your list of previous purchases as this is permanently maintained. You can, however keep them off the bookshelf by selection Books within Collections rather than Purchased Books.
Currently Being ModeratedJan 6, 2014 8:43 PM (in response to randers4)
Thanks, that's a tad annoying! Oh well..