APA Format
World Health Organization (WHO) . (). Alternative systems of oral care delivery, TRS.750. : Geneva WHO 1987
MLA Format
World Health Organization (WHO) . Alternative systems of oral care delivery, TRS.750. : Geneva WHO 1987,
Australian/Harvard Format
World Health Organization (WHO) . . Alternative systems of oral care delivery, TRS.750. Geneva WHO 1987, 
Warning: These citations may not always be 100% accurate.