Follett, K. (1979). Triple: Ken Follett. Pan Books.
Cita Chicago (17th ed.)Follett, Ken. Triple: Ken Follett. London: Pan Books, 1979.
Cita MLA (8th ed.)Follett, Ken. Triple: Ken Follett. Pan Books, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.