World Health organization. (2009). Priority areas for research in communicable diseases. World Health Organization.
Chicago Style aipamenaWorld Health organization. Priority Areas for Research in Communicable Diseases. New Delhi: World Health Organization, 2009.
MLA aipamenaWorld Health organization. Priority Areas for Research in Communicable Diseases. World Health Organization, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.