* Gold, C., Heldal, T.O., Dahle, T., Wigram, T. (2006) "Music therapy for schizophrenia or schizophrenia-like illnesses", Cochrane Database of Systematic Reviews, Issue 4.
* Gold, C., Heldal, T.O., Dahle, T., Wigram, T. (2006) "Music therapy for schizophrenia or schizophrenia-like illnesses", Cochrane Database of Systematic Reviews, Issue 4.