APA-referens (7:e uppl.)

Sharma, A. (2017). General studies for civil services preliminary examination GS paper-II (UPSC). McGraw hill Education.

Chicago-referens (17:e uppl.)

Sharma, Arun. General Studies for Civil Services Preliminary Examination GS Paper-II (UPSC). Chennai: McGraw hill Education, 2017.

MLA-referens (9:e uppl.)

Sharma, Arun. General Studies for Civil Services Preliminary Examination GS Paper-II (UPSC). McGraw hill Education, 2017.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.