Husain, M. (2018). Environment and ecology- 4th ed For Civil Service Exam (4th.). CL Media(P) Ltd.
芝加哥风格引文Husain, Majid. Environment and Ecology- 4th Ed For Civil Service Exam. 4th. New Delhi: CL Media(P) Ltd, 2018.
MLA引文Husain, Majid. Environment and Ecology- 4th Ed For Civil Service Exam. 4th. CL Media(P) Ltd, 2018.
警告：这些引文格式不一定是100％准确.