Citazione APA

Khan, A. R. e. (2010). Objective general studies: For UPSC civil services preliminary examination. Tata Mc Graw Hill Education.

Stile di citazione Chicago

Khan, A R; ed. Objective General Studies: For UPSC Civil Services Preliminary Examination. New Delhi: Tata Mc Graw Hill Education, 2010.

Citazione MLA

Khan, A R; ed. Objective General Studies: For UPSC Civil Services Preliminary Examination. Tata Mc Graw Hill Education, 2010.