World Health Organization. (2012). World health statistics 2012. World Health Organization.
Style de citation Chicago (17e éd.)World Health Organization. World Health Statistics 2012. Geneva, Switzerland: World Health Organization, 2012.
Style de citation MLA (8e éd.)World Health Organization. World Health Statistics 2012. World Health Organization, 2012.
Attention : ces citations peuvent ne pas être correctes à 100%.