New Vishal Publication. (2019). IAS Preliminary Civil Services (Pre.)Exam General Studies Paper-2. New Vishal Publication.
芝加哥风格引文New Vishal Publication. IAS Preliminary Civil Services (Pre.)Exam General Studies Paper-2. New Delhi: New Vishal Publication, 2019.
MLA引文New Vishal Publication. IAS Preliminary Civil Services (Pre.)Exam General Studies Paper-2. New Vishal Publication, 2019.
警告：这些引文格式不一定是100％准确.