World Health Organization. (2012). Persisting pain in children: Important information for policy makers. World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Persisting Pain in Children: Important Information for Policy Makers. Geneva, Switzerland: World Health Organization, 2012.
Citatione MLA (8a ed.)World Health Organization. Persisting Pain in Children: Important Information for Policy Makers. World Health Organization, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.