APA Format
World Health Organization (WHO) . (). Spontaneous and induced abortion; report of a WHO scientific group. : Geneva WHO 1970
MLA Format
World Health Organization (WHO) . Spontaneous and induced abortion; report of a WHO scientific group. : Geneva WHO 1970,
Australian/Harvard Format
World Health Organization (WHO) . . Spontaneous and induced abortion; report of a WHO scientific group. Geneva WHO 1970, 
Warning: These citations may not always be 100% accurate.