Ackroyd, P. (2004). Cities of blood. DK.
Cita Chicago Style (17a ed.)Ackroyd, Peter. Cities of Blood. London: DK, 2004.
Cita MLA (9a ed.)Ackroyd, Peter. Cities of Blood. DK, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.