World Health Organization. (1975). Methods used in the USSR for establishing biologically safe levels of toxic substances. World Health Organization.
Cita Chicago Style (17a ed.)World Health Organization. Methods Used in the USSR for Establishing Biologically Safe Levels of Toxic Substances. Geneva: World Health Organization, 1975.
Cita MLA (8a ed.)World Health Organization. Methods Used in the USSR for Establishing Biologically Safe Levels of Toxic Substances. World Health Organization, 1975.
Precaución: Estas citas no son 100% exactas.