World Health Organization. (2012). Persisting pain in children: Important information for policy makers. World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Persisting Pain in Children: Important Information for Policy Makers. Geneva, Switzerland: World Health Organization, 2012.
MLA-Zitierstil (8. Ausg.)World Health Organization. Persisting Pain in Children: Important Information for Policy Makers. World Health Organization, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.