APA Format
World Health Organization (WHO) . (). The use of essential drugs: ninth report of the WHO expert committee (including the revised model list of essential drugs. : Geneva WHO 2000
MLA Format
World Health Organization (WHO) . The use of essential drugs: ninth report of the WHO expert committee (including the revised model list of essential drugs. : Geneva WHO 2000,
Australian/Harvard Format
World Health Organization (WHO) . . The use of essential drugs: ninth report of the WHO expert committee (including the revised model list of essential drugs. Geneva WHO 2000, 
Warning: These citations may not always be 100% accurate.