Gwersylla /
Amery, Heather.
Cartwright, Stephen,1947-2004.
Huws, Emily.
Llandysul : Gwasg Gomer,
[1998?], c1995.
Arg. Saesneg gwreiddiol = Original English ed.: Llundain: Usborne Publishing, 1995
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws
Welsh language