United Nations Economic Commission for Europe. (2008). Non-observed economy in national accounts: Survey of country practices. UN.
Чикаго маягийн жагсаалтUnited Nations Economic Commission for Europe. Non-observed Economy in National Accounts: Survey of Country Practices. Geneva: UN, 2008.
MLA ишлэлUnited Nations Economic Commission for Europe. Non-observed Economy in National Accounts: Survey of Country Practices. UN, 2008.
Warning: These citations may not always be 100% accurate.