APA Format
World Health Organization (WHO) . (). Medical radiation physics, TRS.390. : Geneva WHO 1968
MLA Format
World Health Organization (WHO) . Medical radiation physics, TRS.390. : Geneva WHO 1968,
Australian/Harvard Format
World Health Organization (WHO) . . Medical radiation physics, TRS.390. Geneva WHO 1968, 
Warning: These citations may not always be 100% accurate.