एपीए उद्धरण

Walpole, H. (1997). Secret city. Sutton Publishing Ltd.

शिकागो स्टाइल उद्धरण

Walpole, Hugh. Secret City. Gloucestershire: Sutton Publishing Ltd, 1997.

एमएलए उद्धरण

Walpole, Hugh. Secret City. Sutton Publishing Ltd, 1997.