Arg. Saesneg gwreiddiol = Original English ed.: [London]: Warne, 1999.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Llyfr bwrdd gyda tegan rhifo = Board book with counting toy.
Llyfr cyfri Guto Gwningen by Beatrix Potter. ISBN 1870394720. Published by Sain in 1999. Publication and catalogue information, links to buy online and reader comments.