Cita APA (7th ed.)
Forsyth,Frederick. (2011). The fourth protocol. Arrow Books.
Cita Chicago (17th ed.)
Forsyth,Frederick. The Fourth Protocol. London: Arrow Books, 2011.
Cita MLA (9th ed.)
Forsyth,Frederick. The Fourth Protocol. Arrow Books, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.