Yr helfa drysor /
Butterworth, Nick.
Caerdydd : Dref Wen,
1996.
Cyhoeddiad Saesneg cyntaf = First English edition: London : HarperCollins, 1996.
Cyhoeddwyd dan nawdd Cynllun Llyfrau Darllen Cyd-bwyllgor Addysg Cymru = Published under the auspices of the Welsh Joint Education Committee Reading Book Scheme.
Addasiad Cymraeg gan = Welsh adaptation by: Juli Paschalis.
Picture books for children.