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2. Belfrage, H. (1997) The Hare PCL:SV. Swedish Manual Supplement. Ontario, Canada: Multi-Health Systems. Swedish translation of Hart, Cox and Hare (1995) The Hare PCL.SV.
3. Belfrage, H. and Fransson, G. (1997) HCR-20. Bedömning av risk for framtida våid. Manual med instruktioner och kommentarer. Växjö: Forskningsenheten, Regionpsykiatriskt centrum.
4. Douglas, K. S. (1998) The HCR-20 Violence Risk Assessment Scheme: a Review and Annotated Bibliography. Burnaby, BC Canada: the Mental Health, Law & Policy Institute, Simon Fraser University.
5. Hare, R. D. (1991) Manual for the Hare Psychopathy Checklist - Revised. Toronto: Multi-Health Systems.