Khullar, D. (2018). Indian and world geography for civil services preliminary examination. CL Media.
Chicago-čujuhus (17. p.)Khullar, D.R. Indian and World Geography for Civil Services Preliminary Examination. Roorkee: CL Media, 2018.
MLA-čujuhus (9. p.)Khullar, D.R. Indian and World Geography for Civil Services Preliminary Examination. CL Media, 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.