Bill, G., & Snow, A. (2001). Dirty dog. Cambridge University Press.
Cita Chicago (17th ed.)Bill, Gillham, i Alan Snow. Dirty Dog. Cambridge: Cambridge University Press, 2001.
Cita MLA (8th ed.)Bill, Gillham, i Alan Snow. Dirty Dog. Cambridge University Press, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.