text:  As of 2007 , according to a report submitted on his behalf , Churchill has written 10 books on his own and co @-@ authored 4 . Some have been reprinted with updates . He has written 51 book chapters , 3 law reviews , and 50 scholarly essays ; 27 of these were refereed . He has edited 4 volumes and co @-@ edited 3 more . 
  