United Nations Conference on Trade and Development & Chalmin, P. d. (1998). World commodity survey 1999-2000: Markets, trends and the world economic environment. UNCTAD.
Chicago Style (17. basım) AtıfUnited Nations Conference on Trade and Development ve Philippe derl Chalmin. World Commodity Survey 1999-2000: Markets, Trends and the World Economic Environment. Geneva: UNCTAD, 1998.
MLA (9th ed.) AtıfUnited Nations Conference on Trade and Development ve Philippe derl Chalmin. World Commodity Survey 1999-2000: Markets, Trends and the World Economic Environment. UNCTAD, 1998.
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