Yeats, A. J. (1979). Trade barriers facing developing countries. St. Martin's Press.
芝加哥风格引文Yeats, Alexander J. Trade Barriers Facing Developing Countries. New York: St. Martin's Press, 1979.
MLA引文Yeats, Alexander J. Trade Barriers Facing Developing Countries. St. Martin's Press, 1979.
警告：这些引文格式不一定是100％准确.