APA (7e ed.) Bronvermelding

World Health Organization. (2012). Persisting pain in children: Important information for physicians and nurses. World Health Organization.

Chicago (17e ed.) Bronvermelding

World Health Organization. Persisting Pain in Children: Important Information for Physicians and Nurses. Geneva, Switzerland: World Health Organization, 2012.

MLA (8e ed.) Bronvermelding

World Health Organization. Persisting Pain in Children: Important Information for Physicians and Nurses. World Health Organization, 2012.