(1980). The work of who 1978-1979: Biennial report of the director-general to the world health assembly and to the united nations. World Health Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)The Work of Who 1978-1979: Biennial Report of the Director-general to the World Health Assembly and to the United Nations. Geneva: World Health Organization, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)The Work of Who 1978-1979: Biennial Report of the Director-general to the World Health Assembly and to the United Nations. World Health Organization, 1980.
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