How to delete ibooks?
How to delete ibooks permanently?
iPad, iOS 7.0.6, Delete ibooks permanently
Do you want to delete the app or books inside the app?
If it's the app. Press and hold until the icon show a cross in the top left hand corner and shakes. Hit the cross.
It it's books, hit edit top right corner. select the books you want to delete blue tick box appears, then delete, top right hand corner.
Of cause you will have to adjust your sync settings next time you sink with iTunes or they will all come back.
Hope this helps.
PJRS