Addasiad Cymraeg gan = Welsh adaptation by : Iwan Llwyd.
Argraffiad Saesneg gwreiddiol = Original English edition : Toronto, Canada : Annick Press, 1989.
Y dywysoges sach datws by Robert N. Munsch. ISBN 0953320642. Published by Houdmont in 2003. Publication and catalogue information, links to buy online and reader comments.