Argraffiad Saesneg gwreiddiol = Original English edition : London : Egmont Children's Books, 2005.
Addasiad Cymraeg gan = Welsh adaptation by : Elin Meek.
Pen-blwydd Twm
Anrheg Lili
Syrpreis!
Yr olion traed hud by Melissa Balfour. ISBN 1855966778. Published by Gwasg y Dref Wen in 2005. Publication and catalogue information, links to buy online and reader comments.