World Health Organization. (2011). The fourth ten years of the World Health Organization 1978-1987. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. Geneva: World Health Organization, 2011.
MLA-referens (8:e uppl.)World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. World Health Organization, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.