World Health Organization. (2011). Manual for the laboratory diagnosis and virological surveillance of influenza. World Health Organization.
Chicago Style aipamenaWorld Health Organization. Manual for the Laboratory Diagnosis and Virological Surveillance of Influenza. Geneva, Switzerland: World Health Organization, 2011.
MLA aipamenaWorld Health Organization. Manual for the Laboratory Diagnosis and Virological Surveillance of Influenza. World Health Organization, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.