United Nations Conference on Trade and Development & United Nations Conference on Trade and Development. Special Committee on Preferences. (1974). Operation and effects of the generalized system of preferences. United Nations.
Chicago Style (17th ed.) CitationUnited Nations Conference on Trade and Development and United Nations Conference on Trade and Development. Special Committee on Preferences. Operation and Effects of the Generalized System of Preferences. New York: United Nations, 1974.
MLA引文United Nations Conference on Trade and Development and United Nations Conference on Trade and Development. Special Committee on Preferences. Operation and Effects of the Generalized System of Preferences. United Nations, 1974.
警告：這些引文格式不一定是100％准確.