Seiliwyd ar y ffilm wedi'i hanimeiddio = Based on the animated film.
Addaswyd o sgript ffilm Murray Watts = Adapted from Murray Watts' film script.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Hodder Children's Books, 2000.
Addasiad Cymraeg gan = Welsh adaptation by : Luned Whelan.
Gŵr y gwyrthiau : y stori fwyaf erioed by Sally Humble-Jackson. ISBN 0852842481. Published by Hughes a'i Fab in 2000. Publication and catalogue information, links to buy online and reader comments.