OMS. (1990). Bulletin of WHO: Vol.68(4)/1990. Geneva: OMS.
Trích dẫn kiểu ChicagoOMS. Bulletin of WHO: Vol.68(4)/1990. Geneva: OMS, 1990.
MLA引文OMS. Bulletin of WHO: Vol.68(4)/1990. Geneva: OMS, 1990.
警告：這些引文格式不一定是100％准確.
APA引文