APA Format
World Health Organization (WHO) . (). The African trypanosomiases, TRS.635. : Geneva WHO 1979
MLA Format
World Health Organization (WHO) . The African trypanosomiases, TRS.635. : Geneva WHO 1979,
Australian/Harvard Format
World Health Organization (WHO) . . The African trypanosomiases, TRS.635. Geneva WHO 1979, 
Warning: These citations may not always be 100% accurate.