World Health Organization. (2008). World health organization outbreak communication planning guide. World Health Organization.
Chicago Style aipamenaWorld Health Organization. World Health Organization Outbreak Communication Planning Guide. Geneva: World Health Organization, 2008.
MLA aipamenaWorld Health Organization. World Health Organization Outbreak Communication Planning Guide. World Health Organization, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.