Não informado. (1947). Official Records of the World Health Organization. World Health Organization.
Cita Chicago Style (17a ed.)Não informado. Official Records of the World Health Organization. Geneva, Suíça: World Health Organization, 1947.
Cita MLA (8a ed.)Não informado. Official Records of the World Health Organization. World Health Organization, 1947.
Precaución: Estas citas no son 100% exactas.