Gwrthryfel y graig
Subtitle: nofel ar gyfer pobl ifanc yn eu harddegau
By: troswyd gan Mair Jones.
Contributors: Jones, Mair.
Publisher: Mair Jones
Place of publication: Llannerch-y-medd
Language: wel
Number of pages: 128
Work titles: Rebel on a rock.
Notes: Originally published: London : Gollancz, 1978.