Argraffiad Saesneg gwreiddiol = Original English edition: New Zealand : Nelson Price Milburn, 1995.
Addasiad Cymraeg gan = Welsh adaptation by: Nia Bleddyn.
Ar y fferm yn y gwanwyn by Jenny Giles. ISBN 1856444503. Published by Canolfan Astudiaethau Addysg in 2000. Publication and catalogue information, links to buy online and reader comments.