North, M. (1991). Act of treason: The role of J. Edgar Hoover in the assassination of President Kennedy (1st Carroll & Graf ed.). Carroll & Graf Publishers.
Dyfyniad Arddull ChicagoNorth, Mark. Act of Treason: The Role of J. Edgar Hoover in the Assassination of President Kennedy. 1st Carroll & Graf ed. New York: Carroll & Graf Publishers, 1991.
Dyfyniad MLANorth, Mark. Act of Treason: The Role of J. Edgar Hoover in the Assassination of President Kennedy. 1st Carroll & Graf ed. Carroll & Graf Publishers, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.