APA Format
World Health Organization (WHO) . (). Diethyl phthalate, CICAD.52. : Geneva WHO 2003
MLA Format
World Health Organization (WHO) . Diethyl phthalate, CICAD.52. : Geneva WHO 2003,
Australian/Harvard Format
World Health Organization (WHO) . . Diethyl phthalate, CICAD.52. Geneva WHO 2003, 
Warning: These citations may not always be 100% accurate.