एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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