Rajagopalan R. (2016). Environmental Studies (3rd.). Oxford University Press.
芝加哥风格引文Rajagopalan R. Environmental Studies. 3rd. New Delhi: Oxford University Press, 2016.
MLA引文Rajagopalan R. Environmental Studies. 3rd. Oxford University Press, 2016.
警告：这些引文格式不一定是100％准确.