Letang a Sioned yn dod i'r adwy /
Naidoo, Beverley.
Davies, Siân Vaughan Evans.
Röhr-Rouendaal, Petra.
Curriculum and Assessment Authority for Wales.
Caerdydd : Camfa,
1997.
Arg. Saesneg gwreiddiol = Original English ed.: Harlow: Longman Group, 1994.
Addasiad Cymraeg gan = Welsh adaptation by: Siân Vaughan Evans Davies.
School field trips