1. Interim Guidance on the Management, Recording and Investigation of Missing Persons (College of Policing, UK);ACPO,2013
2. Practice Advice on Search Management and Procedures;Association of Chief Police Officers (ACPO),2006
3. Handbook of Family Resilience;Becvar,2013
4. Ambiguous Loss: Learning to Live with Unresolved Grief;Boss,1999
5. Ambiguous loss in families of the missing;Boss;Lancet,2002