New Vishal Publication. (2021). Upsc-Civil Services Exam General studies (Preliminary)Paper1&Paper2. New Vishal Publication.
芝加哥风格引文New Vishal Publication. Upsc-Civil Services Exam General Studies (Preliminary)Paper1&Paper2. New Delhi: New Vishal Publication, 2021.
MLA引文New Vishal Publication. Upsc-Civil Services Exam General Studies (Preliminary)Paper1&Paper2. New Vishal Publication, 2021.
警告：这些引文格式不一定是100％准确.