एपीए उद्धरण

J K Chopra. (2011). Unique quintessence of General Studies Paper I. Unique publishers.

शिकागो स्टाइल उद्धरण

J K Chopra. Unique Quintessence of General Studies Paper I. New Delhi: Unique publishers, 2011.

एमएलए उद्धरण

J K Chopra. Unique Quintessence of General Studies Paper I. Unique publishers, 2011.