Kaushik, A. (2012). Perspective in Environmental Studies (3rd.). New Age.
芝加哥风格引文Kaushik, A. Perspective in Environmental Studies. 3rd. New Delhi: New Age, 2012.
MLA引文Kaushik, A. Perspective in Environmental Studies. 3rd. New Age, 2012.
警告：这些引文格式不一定是100％准确.