APA

West N, . (1999). Venona: The Great secret of the Cold War. London: Harper Collins.

Chicago

West N, . 1999. Venona: The Great secret of the Cold War. London: Harper Collins.

Harvard

West N, . (1999). Venona: The Great secret of the Cold War. London: Harper Collins.

MLA

West N, . Venona: The Great secret of the Cold War. London: Harper Collins. 1999.