United Nations Conference on Trade and Development. (1985). Collusive tendering: Study. United Nations.
芝加哥风格引文United Nations Conference on Trade and Development. Collusive Tendering: Study. New York: United Nations, 1985.
MLA引文United Nations Conference on Trade and Development. Collusive Tendering: Study. United Nations, 1985.
警告：这些引文格式不一定是100％准确.