Sarkar, S. (2014). A textbook of environmental studies. Mangalam Publisher.
芝加哥风格引文Sarkar, Sukanta. A Textbook of Environmental Studies. Delhi: Mangalam Publisher, 2014.
MLA引文Sarkar, Sukanta. A Textbook of Environmental Studies. Mangalam Publisher, 2014.
警告：这些引文格式不一定是100％准确.