World Health Organization. The work of WHO: Biennial report of the director-general to the World Health Assembly and to the United Nations. World Health Organization.
Citace podle Chicago (17th ed.)World Health Organization. The Work of WHO: Biennial Report of the Director-general to the World Health Assembly and to the United Nations. Geneva: World Health Organization.
Citace podle MLA (8th ed.)World Health Organization. The Work of WHO: Biennial Report of the Director-general to the World Health Assembly and to the United Nations. World Health Organization.
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