Copeland, M. (1974). Without cloak or dagger: The truth about the new espionage. Simon and Schuster.
Lua i Stíl Chicago (17ú heag.)Copeland, Miles. Without Cloak or Dagger: The Truth About the New Espionage. New York: Simon and Schuster, 1974.
Lua MLA (9ú heag.)Copeland, Miles. Without Cloak or Dagger: The Truth About the New Espionage. Simon and Schuster, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.