APA Format
World Health Organization (WHO) . (). Evaluation of environmental health programmes, TRS.528. : Geneva WHO 1973
MLA Format
World Health Organization (WHO) . Evaluation of environmental health programmes, TRS.528. : Geneva WHO 1973,
Australian/Harvard Format
World Health Organization (WHO) . . Evaluation of environmental health programmes, TRS.528. Geneva WHO 1973, 
Warning: These citations may not always be 100% accurate.