Bilsborrow R.E & Graeme Hugo, A. O. (1997). International Migration Statistics: Guidelines for Improving Data Collection Systems. ILO.
Чикаго маягийн жагсаалтBilsborrow R.E ба A.S. Oberai Graeme Hugo. International Migration Statistics: Guidelines for Improving Data Collection Systems. Singapore: ILO, 1997.
MLA ишлэлBilsborrow R.E ба A.S. Oberai Graeme Hugo. International Migration Statistics: Guidelines for Improving Data Collection Systems. ILO, 1997.
Warning: These citations may not always be 100% accurate.