United Nations Conference on Trade and Development. (1969). Rules of origin in the general scheme of preferences in favour of developing countries. United Nations.
Chicago Style (17th ed.) CitationUnited Nations Conference on Trade and Development. Rules of Origin in the General Scheme of Preferences in Favour of Developing Countries. N.Y.: United Nations, 1969.
MLA引文United Nations Conference on Trade and Development. Rules of Origin in the General Scheme of Preferences in Favour of Developing Countries. United Nations, 1969.
警告：這些引文格式不一定是100％准確.