New Vishal Publication. (2021). Upsc-Civil Services Exam General studies (Preliminary)Paper1&Paper2. New Vishal Publication.
Chicago-referens (17:e uppl.)New Vishal Publication. Upsc-Civil Services Exam General Studies (Preliminary)Paper1&Paper2. New Delhi: New Vishal Publication, 2021.
MLA-referens (9:e uppl.)New Vishal Publication. Upsc-Civil Services Exam General Studies (Preliminary)Paper1&Paper2. New Vishal Publication, 2021.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.