APA Format
World Health Organization (WHO) . (). "Silver and silver compounds: environmental aspects; CICAD. No.44". : Geneva WHO 2002
MLA Format
World Health Organization (WHO) . "Silver and silver compounds: environmental aspects; CICAD. No.44". : Geneva WHO 2002,
Australian/Harvard Format
World Health Organization (WHO) . . "Silver and silver compounds: environmental aspects; CICAD. No.44". Geneva WHO 2002, 
Warning: These citations may not always be 100% accurate.