APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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