APA Format
World Health Organization (WHO) . (). Bioavailability of drugs: principles and problems, report of WHO scientific group. : Geneva WHO 1974
MLA Format
World Health Organization (WHO) . Bioavailability of drugs: principles and problems, report of WHO scientific group. : Geneva WHO 1974,
Australian/Harvard Format
World Health Organization (WHO) . . Bioavailability of drugs: principles and problems, report of WHO scientific group. Geneva WHO 1974, 
Warning: These citations may not always be 100% accurate.