==Teacher said...== 
 "One of his teachers said that Dave's experience was one of the worst child abuse cases in California at that time." 

 The source says: 

  
 Our sentence is irredeemably vague, but the source is not much better.  We don't know who this former teacher is and why they would have knowledge of every case of child abuse on record in California.  I would have thought that there were many cases of child abuse that resulted in death in a state as populous as California.  Possibly this is in the book, and can then be cited to the book, but to attribute it to a random teacher, and cite this Guardian text as a reference seems unsupportable.  

 All the best:  , 15:30, 18 September 2014 (UTC).