APA Format
World Health Organization (WHO) . (). "Intra uterinedevices: physiological and clinical aspects; report of a WHO Scientific group/WHO". : Geneva WHO 1968
MLA Format
World Health Organization (WHO) . "Intra uterinedevices: physiological and clinical aspects; report of a WHO Scientific group/WHO". : Geneva WHO 1968,
Australian/Harvard Format
World Health Organization (WHO) . . "Intra uterinedevices: physiological and clinical aspects; report of a WHO Scientific group/WHO". Geneva WHO 1968, 
Warning: These citations may not always be 100% accurate.