Kumar, H. (1998). Environmental pollution and waste management. M.D..
芝加哥风格引文Kumar, H.D. Environmental Pollution and Waste Management. New Delhi: M.D., 1998.
MLA引文Kumar, H.D. Environmental Pollution and Waste Management. M.D., 1998.
警告：这些引文格式不一定是100％准确.