APA Format
World Health Organization (WHO) . (). Soil transmited helminths, TRS.277. : Geneva WHO 1964
MLA Format
World Health Organization (WHO) . Soil transmited helminths, TRS.277. : Geneva WHO 1964,
Australian/Harvard Format
World Health Organization (WHO) . . Soil transmited helminths, TRS.277. Geneva WHO 1964, 
Warning: These citations may not always be 100% accurate.