Kula, E. (1992). Economics of natural resources and the environment. Chapman & Hall.
Chicagoスタイル(17版)引用形式Kula, Erhun. Economics of Natural Resources and the Environment. London: Chapman & Hall, 1992.
MLA(9版)引用形式Kula, Erhun. Economics of Natural Resources and the Environment. Chapman & Hall, 1992.
警告: この引用は必ずしも正確ではありません.