APA-Zitierstil (7. Ausg.)

Brace, E. C. (1988). A code to keep: The true story of America's longest-held civilian prisoner of war in Vietnam. St. Martin's Pr.

Chicago-Zitierstil (17. Ausg.)

Brace, Ernest C. A Code to Keep: The True Story of America's Longest-held Civilian Prisoner of War in Vietnam. New York, NY: St. Martin's Pr, 1988.

MLA-Zitierstil (9. Ausg.)

Brace, Ernest C. A Code to Keep: The True Story of America's Longest-held Civilian Prisoner of War in Vietnam. St. Martin's Pr, 1988.