APA Format
World Health Organization (WHO) . (). Steroid contraception and the risk of neoplasia, TRS.619. : Geneva WHO 1978
MLA Format
World Health Organization (WHO) . Steroid contraception and the risk of neoplasia, TRS.619. : Geneva WHO 1978,
Australian/Harvard Format
World Health Organization (WHO) . . Steroid contraception and the risk of neoplasia, TRS.619. Geneva WHO 1978, 
Warning: These citations may not always be 100% accurate.