Arg. Saesneg gwreiddiol = Original English ed.: London: Orchard Books, 1995.
Addasiad Cymraeg gan = Welsh adaptation by: Dylan Williams.
Teitl clawr = Cover title.
Board book.
Mae Mister Arth yn dweud nos da by Debi Gliori. ISBN 0948930896. Published by Cymdeithas Lyfrau Ceredigion in 1998. Publication and catalogue information, links to buy online and reader comments.