Ackroyd, P. (2004). Cities of blood. DK.
Cita Chicago (17th ed.)Ackroyd, Peter. Cities of Blood. London: DK, 2004.
Cita MLA (9th ed.)Ackroyd, Peter. Cities of Blood. DK, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)