World Health Organization. (2011). The fourth ten years of the World Health Organization 1978-1987. World Health Organization.
Style de citation Chicago (17e éd.)World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. Geneva: World Health Organization, 2011.
Style de citation MLA (8e éd.)World Health Organization. The Fourth Ten Years of the World Health Organization 1978-1987. World Health Organization, 2011.
Attention : ces citations peuvent ne pas être correctes à 100%.