Não informado. (2001). Bulletin of the World Health Organization. World Health Organization.
Style de citation Chicago (17e éd.)Não informado. Bulletin of the World Health Organization. Geneva, Suíça: World Health Organization, 2001.
Style de citation MLA (8e éd.)Não informado. Bulletin of the World Health Organization. World Health Organization, 2001.
Attention : ces citations peuvent ne pas être correctes à 100%.