APA Format
World Health Organization (WHO) . (). Diet, nutrition and the prevention of chronic disease, TRS.797. : Geneva WHO 1990
MLA Format
World Health Organization (WHO) . Diet, nutrition and the prevention of chronic disease, TRS.797. : Geneva WHO 1990,
Australian/Harvard Format
World Health Organization (WHO) . . Diet, nutrition and the prevention of chronic disease, TRS.797. Geneva WHO 1990, 
Warning: These citations may not always be 100% accurate.