Deunydd gwreiddiol = Original material: Scripture Union, 1988-1992.
Ar y clawr = On cover: Llyfr gweithgarwch Cristnogol i rai 11-16 oed [Christian activity book for children aged 11-16].
Stilio : i gyd-fynd â Llyfr gwersi Ysgol Sul i ieuenctid ac oedolion : Blwyddyn B. ISBN 1859940048. Published by Cyhoeddiadau'r Gair in 1995. Publication and catalogue information, links to buy online and reader comments.