Economic commission for Europe. (2006). Strategies for monitoring and assessment of transboundary rivers, lakes and groundwaters. United Nations.
Чикаго маягийн жагсаалтEconomic commission for Europe. Strategies for Monitoring and Assessment of Transboundary Rivers, Lakes and Groundwaters. Geneva: United Nations, 2006.
MLA ишлэлEconomic commission for Europe. Strategies for Monitoring and Assessment of Transboundary Rivers, Lakes and Groundwaters. United Nations, 2006.
Warning: These citations may not always be 100% accurate.