OMS. (1990). World health forum; Vol.11(N.4)/1990. Geneva: OMS.
Trích dẫn kiểu ChicagoOMS. World Health Forum; Vol.11(N.4)/1990. Geneva: OMS, 1990.
Deismireacht MLAOMS. World Health Forum; Vol.11(N.4)/1990. Geneva: OMS, 1990.
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