Thomas. (2002). Political writings. Cambridge, UK: Cambridge University Press.
Dyfyniad Arddull ChicagoThomas. Political Writings. Cambridge, UK: Cambridge University Press, 2002.
Dyfyniad MLAThomas. Political Writings. Cambridge, UK: Cambridge University Press, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.