Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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