OMS. International digest of health legislation: Vol.42(2)/1991. Geneva: OMS.
Trích dẫn kiểu ChicagoOMS. International Digest of Health Legislation: Vol.42(2)/1991. Geneva: OMS.
MLA引文OMS. International Digest of Health Legislation: Vol.42(2)/1991. Geneva: OMS.
警告：這些引文格式不一定是100％准確.