APA (7th ed.) Citation

FitzGibbon. (1977). Secret intelligence in the twentieth century. Stein and Day.

Chicago Style (17th ed.) Citation

FitzGibbon. Secret Intelligence in the Twentieth Century. New York: Stein and Day, 1977.

MLA (8th ed.) Citation

FitzGibbon. Secret Intelligence in the Twentieth Century. Stein and Day, 1977.