Argraffiad Saesneg gwreiddiol = Original English edition : London : David and Charles Children's Books, 1999.
Addasiad Cymraeg gan = Welsh adaptation by : Emily Huws.
Owain a'r deinosoriaid by Ian Whybrow. ISBN 1859027075. Published by Gomer in 1999. Publication and catalogue information, links to buy online and reader comments.