Richelson,Jeffrey T. (1995). A Century of spies: Intellegence in the twentieth century.
Chicago Edition CitationRichelson,Jeffrey T. A Century of Spies: Intellegence in the Twentieth Century. Oxford, OUP, 1995.
MLA Edition CitationRichelson,Jeffrey T. A Century of Spies: Intellegence in the Twentieth Century. 1995.
Warning: These citations may not always be 100% accurate.