Joseph, K. (2005). Essentials of environmental studies. Pearson.
シカゴスタイル引用形Joseph, Kurian. Essentials of Environmental Studies. New Delhi: Pearson, 2005.
MLA引用形式Joseph, Kurian. Essentials of Environmental Studies. Pearson, 2005.
警告: この引用は必ずしも正確ではありません.