APA Format
World Health Organization (WHO) . (). Psychosomatic disorders, TRS.275. : Geneva WHO 1964
MLA Format
World Health Organization (WHO) . Psychosomatic disorders, TRS.275. : Geneva WHO 1964,
Australian/Harvard Format
World Health Organization (WHO) . . Psychosomatic disorders, TRS.275. Geneva WHO 1964, 
Warning: These citations may not always be 100% accurate.