APA Format
World Health Organization (WHO) . (). Diethylhexyl phthlate. : Geneva WHO 1992
MLA Format
World Health Organization (WHO) . Diethylhexyl phthlate. : Geneva WHO 1992,
Australian/Harvard Format
World Health Organization (WHO) . . Diethylhexyl phthlate. Geneva WHO 1992, 
Warning: These citations may not always be 100% accurate.