APA (7e ed.) Bronvermelding
Gregory, G. H. (2002). Alcatraz screw: My years as a guard in America's most notorious prison. University of Missouri Press.
Chicago (17e ed.) Bronvermelding
Gregory, George H. Alcatraz Screw: My Years as a Guard in America's Most Notorious Prison. Columbia, MO: University of Missouri Press, 2002.
MLA (9e ed.) Bronvermelding
Gregory, George H. Alcatraz Screw: My Years as a Guard in America's Most Notorious Prison. University of Missouri Press, 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.