APA Format
World Health Organization (WHO) . (). Electromagnetic fields (300 Hz to 300 GHz). : Geneva WHO 1993
MLA Format
World Health Organization (WHO) . Electromagnetic fields (300 Hz to 300 GHz). : Geneva WHO 1993,
Australian/Harvard Format
World Health Organization (WHO) . . Electromagnetic fields (300 Hz to 300 GHz). Geneva WHO 1993, 
Warning: These citations may not always be 100% accurate.