Arg. Saesneg gwreiddiol = Original English ed.: London: Viking, 1994; Arg. Cymraeg gwreiddiol = Original Welsh ed.: Caernarfon: Gwasg Gwynedd, 1995.
Addasiad Cymraeg gan = Welsh adaptation by: Gwawr Maelor.
Pws Pwdin a Ci Cortyn by Harriet Castor. ISBN 086074115X. Published by Gwasg Gwynedd in 1998. Publication and catalogue information, links to buy online and reader comments.