Singh Surender & Parmar Virinder. (2024). General Studies for Civil Services Preliminary Examination: Also useful for State Public Service Commission Examinations Paper-I. Mc Graw Hill.
Chicago-čujuhus (17. p.)Singh Surender juo Parmar Virinder. General Studies for Civil Services Preliminary Examination: Also Useful for State Public Service Commission Examinations Paper-I. Chennai: Mc Graw Hill, 2024.
MLA-čujuhus (9. p.)Singh Surender juo Parmar Virinder. General Studies for Civil Services Preliminary Examination: Also Useful for State Public Service Commission Examinations Paper-I. Mc Graw Hill, 2024.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.