Sharma, A. (2013). General studies 2013: Paper II for civil services preliminary examination. Tata McGraw-Hill.
Dyfyniad Arddull ChicagoSharma, Arun...[et.al]. General Studies 2013: Paper II for Civil Services Preliminary Examination. New Delhi: Tata McGraw-Hill, 2013.
Dyfyniad MLASharma, Arun...[et.al]. General Studies 2013: Paper II for Civil Services Preliminary Examination. Tata McGraw-Hill, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.