APA Format
World Health Organization (WHO) . (). Requirements of ascorbic acid, vitamin D, Vitamin B12, Folate and Iron, TRS.452. : Geneva WHO 1970
MLA Format
World Health Organization (WHO) . Requirements of ascorbic acid, vitamin D, Vitamin B12, Folate and Iron, TRS.452. : Geneva WHO 1970,
Australian/Harvard Format
World Health Organization (WHO) . . Requirements of ascorbic acid, vitamin D, Vitamin B12, Folate and Iron, TRS.452. Geneva WHO 1970, 
Warning: These citations may not always be 100% accurate.