Sharma, A. (2013). General studies 2013: Paper II for civil services preliminary examination. Tata McGraw-Hill.
Chicago-стиль цитированияSharma, Arun...[et.al]. General Studies 2013: Paper II for Civil Services Preliminary Examination. New Delhi: Tata McGraw-Hill, 2013.
MLA-цитированиеSharma, Arun...[et.al]. General Studies 2013: Paper II for Civil Services Preliminary Examination. Tata McGraw-Hill, 2013.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.