United Nations. (1970). Agriculture: Science, technology and development : United States papers prepared for the United Nations conference on the application of science and technology for the benefit of the less developed areas. United Nations.
芝加哥风格引文United Nations. Agriculture: Science, Technology and Development : United States Papers Prepared for the United Nations Conference on the Application of Science and Technology for the Benefit of the Less Developed Areas. Geneva: United Nations, 1970.
MLA引文United Nations. Agriculture: Science, Technology and Development : United States Papers Prepared for the United Nations Conference on the Application of Science and Technology for the Benefit of the Less Developed Areas. United Nations, 1970.