Roberts, P. (2000). How poetry works (2nd ed.). Penguin Books.
Dyfyniad Arddull ChicagoRoberts, Philip. How Poetry Works. 2nd ed. Harmondsworth, Middlesex, England ; New York, New York, U.S.A.: Penguin Books, 2000.
Dyfyniad MLARoberts, Philip. How Poetry Works. 2nd ed. Penguin Books, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.