OMS. (1993). WHO technical report series; N.835: Aging and working capacity. Geneva: OMS.
Trích dẫn kiểu ChicagoOMS. WHO Technical Report Series; N.835: Aging and Working Capacity. Geneva: OMS, 1993.
Deismireacht MLAOMS. WHO Technical Report Series; N.835: Aging and Working Capacity. Geneva: OMS, 1993.
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