Karpagam, M. (2006). Environmental economics: A text book. Sterling publishers.
シカゴスタイル引用形Karpagam, M. Environmental Economics: A Text Book. New Delhi: Sterling publishers, 2006.
MLA引用形式Karpagam, M. Environmental Economics: A Text Book. Sterling publishers, 2006.
警告: この引用は必ずしも正確ではありません.