Eichhorn, W. (1982). Economic theory of natural resources. Physica-Verlag.
芝加哥风格引文Eichhorn, W. Economic Theory of Natural Resources. Wurzburg: Physica-Verlag, 1982.
MLA引文Eichhorn, W. Economic Theory of Natural Resources. Physica-Verlag, 1982.
警告：这些引文格式不一定是100％准确.