Παραπομπή σε μορφή APA (7η εκδ.)

World Health Organization. (2012). WHO guidelines on the pharmacological treatment of persisting pain in children with medical illness. World Health Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

World Health Organization. WHO Guidelines on the Pharmacological Treatment of Persisting Pain in Children with Medical Illness. Geneva, Switzerland: World Health Organization, 2012.

Παραπομπή σε μορφή MLA (8th εκδ.)

World Health Organization. WHO Guidelines on the Pharmacological Treatment of Persisting Pain in Children with Medical Illness. World Health Organization, 2012.