APA Format
World Health Organization (WHO) . (). "Cell-mediated immunity and resistance to infection; report of a WHO Scientific Group, TRS.519". : Geneva, WHO, 1973
MLA Format
World Health Organization (WHO) . "Cell-mediated immunity and resistance to infection; report of a WHO Scientific Group, TRS.519". : Geneva, WHO, 1973,
Australian/Harvard Format
World Health Organization (WHO) . . "Cell-mediated immunity and resistance to infection; report of a WHO Scientific Group, TRS.519". Geneva, WHO, 1973, 
Warning: These citations may not always be 100% accurate.