Argraffiad Saesneg gwreiddiol = Original English edition : New York : Bantam Doubleday Dell, 1996.
Addasiad Cymraeg gan = Welsh adaptation by : Esyllt Nest Roberts.
Y llong drysor by Gary Paulsen. ISBN 086381686X. Published by Gwasg Carreg Gwalch in 2001. Publication and catalogue information, links to buy online and reader comments.