एपीए उद्धरण

Chopra, J. (2010). Unique quintessence of Indian History: For U.P.S.C. and state civil services examinations and other competitive examinations. Unique.

शिकागो स्टाइल उद्धरण

Chopra, J.K. Unique Quintessence of Indian History: For U.P.S.C. and State Civil Services Examinations and Other Competitive Examinations. New Delhi: Unique, 2010.

एमएलए उद्धरण

Chopra, J.K. Unique Quintessence of Indian History: For U.P.S.C. and State Civil Services Examinations and Other Competitive Examinations. Unique, 2010.