Addewid y penbwl /
Willis, Jeanne.
Ross, Tony.
Jones, Gwen Angharad.
Williams, Dylan.
Aberystwyth : Cymdeithas Lyfrau Ceredigion,
2003.
Addasiad Cymraeg gan = Welsh adaptation by : Gwen Angharad Jones a Dylan Williams.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Andersen Press, 2003.
Tadpoles