Queen, E. (1969). Cop out. Victor Gollancz.
Cita Chicago (17th ed.)Queen, Ellery. Cop Out. London: Victor Gollancz, 1969.
Cita MLA (8th ed.)Queen, Ellery. Cop Out. Victor Gollancz, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)