UNEP. (1992). Workshop on environmental and natural resource accounting: Summary record. UN.
Чикаго маягийн жагсаалтUNEP. Workshop on Environmental and Natural Resource Accounting: Summary Record. NY: UN, 1992.
MLA ишлэлUNEP. Workshop on Environmental and Natural Resource Accounting: Summary Record. UN, 1992.
Warning: These citations may not always be 100% accurate.