(1992). Standardization and improvement of influenza surveillance: Memorandum from a WHO/GEIG meeting. World Health Organization.
Chicago Style CitationStandardization and Improvement of Influenza Surveillance: Memorandum From a WHO/GEIG Meeting. World Health Organization, 1992.
Cita MLAStandardization and Improvement of Influenza Surveillance: Memorandum From a WHO/GEIG Meeting. World Health Organization, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.