Joseph, K. (2004). Essentials of environmental studies. Pearson Education.
Chicagoスタイル(17版)引用形式Joseph, Kurian. Essentials of Environmental Studies. Delhi: Pearson Education, 2004.
MLA(9版)引用形式Joseph, Kurian. Essentials of Environmental Studies. Pearson Education, 2004.
警告: この引用は必ずしも正確ではありません.