एपीए उद्धरण

(2001). Unique quintessence of general studies for UPSC civil service preliminary examination 2001. Unique Publishers.

शिकागो स्टाइल उद्धरण

Unique Quintessence of General Studies for UPSC Civil Service Preliminary Examination 2001. New Delhi: Unique Publishers, 2001.

एमएलए उद्धरण

Unique Quintessence of General Studies for UPSC Civil Service Preliminary Examination 2001. Unique Publishers, 2001.