Cita APA (7th ed.)

Khullar, D. (2018). Indian and world geography for civil services preliminary examination. CL Media.

Cita Chicago (17th ed.)

Khullar, D.R. Indian and World Geography for Civil Services Preliminary Examination. Roorkee: CL Media, 2018.

Cita MLA (9th ed.)

Khullar, D.R. Indian and World Geography for Civil Services Preliminary Examination. CL Media, 2018.