APA Format
World Health Organization (WHO) . (). Statistics of health services and of their activities. : Geneva WHO 1969
MLA Format
World Health Organization (WHO) . Statistics of health services and of their activities. : Geneva WHO 1969,
Australian/Harvard Format
World Health Organization (WHO) . . Statistics of health services and of their activities. Geneva WHO 1969, 
Warning: These citations may not always be 100% accurate.