Argraffiad Saeneg gwreiddiol = Original English edition: Oxford : Oxford University Press, 1996.
Addasiad Cymraeg gan = Welsh adaptation by: Juli Paschalis, Emily Huws, Glenys M. Roberts.
Coeden ddarllen Rhydychen. Llyfr yr athrawon 3, Tylluanod camau 6-7 a phïod camau 8-9 by Roderick Hunt. ISBN 0861743636. Published by Gwasg Addysgol Drake in 2000. Publication and catalogue information, links to buy online and reader comments.