Kumar, H. (1998). Environmental pollution and waste management. M.D..
Chicagoスタイル(17版)引用形式Kumar, H.D. Environmental Pollution and Waste Management. New Delhi: M.D., 1998.
MLA(9版)引用形式Kumar, H.D. Environmental Pollution and Waste Management. M.D., 1998.
警告: この引用は必ずしも正確ではありません.