World Health Organization. (2012). Persisting pain in children: Important information for physicians and nurses. World Health Organization.
Chicago Style (17. basım) AtıfWorld Health Organization. Persisting Pain in Children: Important Information for Physicians and Nurses. Geneva, Switzerland: World Health Organization, 2012.
MLA (8th ed.) AtıfWorld Health Organization. Persisting Pain in Children: Important Information for Physicians and Nurses. World Health Organization, 2012.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..