Arg. Saesneg gwreiddiol = Original English ed: 1984.
Hawlfraint y testun gwreiddiol = Copyright of original text: Alison Winn.
Helo Dduw : llyfr o weddïau i'r plant lleiaf. ISBN 1874410690. Published by Cyhoeddiadau'r Gair in 1993. Publication and catalogue information, links to buy online and reader comments.