एपीए उद्धरण

Richelson,Jeffrey T. (1995). A Century of spies: Intellegence in the twentieth century.

शिकागो स्टाइल उद्धरण

Richelson,Jeffrey T. A Century of Spies: Intellegence in the Twentieth Century. Oxford, OUP, 1995.

एमएलए उद्धरण

Richelson,Jeffrey T. A Century of Spies: Intellegence in the Twentieth Century. 1995.