Bhatnagar Aditya. (2010). Principles of environmental studies. Oxford University Press.
芝加哥风格引文Bhatnagar Aditya. Principles of Environmental Studies. Delhi: Oxford University Press, 2010.
MLA引文Bhatnagar Aditya. Principles of Environmental Studies. Oxford University Press, 2010.
警告：这些引文格式不一定是100％准确.