Argraffiad Saesneg gwreiddiol = Original English edition : London : Faber and Faber, 1968.
Addasiad Cymraeg gan = Welsh adaptation by : Emily Huws.
Y dyn haearn by Ted Hughes. ISBN 0863819362. Published by Gwasg Carreg Gwalch in 2004. Publication and catalogue information, links to buy online and reader comments.