Trích dẫn APA

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

Trích dẫn kiểu Chicago

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.

Trích dẫn MLA

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.

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