(1990). Supplement of the bulletin of labour statistics 1990-2. United Nations.
Чикаго маягийн жагсаалтSupplement of the Bulletin of Labour Statistics 1990-2. Geneva: United Nations, 1990.
MLA ишлэлSupplement of the Bulletin of Labour Statistics 1990-2. United Nations, 1990.
Warning: These citations may not always be 100% accurate.