Sulick, M. J. (2012). Spying in America: Espionage from the Revolutionary War to the dawn of the Cold War. Georgetown University Press.
Chicago-referens (17:e uppl.)Sulick, Michael J. Spying in America: Espionage from the Revolutionary War to the Dawn of the Cold War. Washington, D.C.: Georgetown University Press, 2012.
MLA-referens (9:e uppl.)Sulick, Michael J. Spying in America: Espionage from the Revolutionary War to the Dawn of the Cold War. Georgetown University Press, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.