Cyhoeddwyd yn wreiddiol yn Saesneg = Originally published in English: [S.l.] : Andersen Press, 2007.
Teitl clawr = Cover title.
Llyfr bordyn = Board book.
Geiriau croes Elfed = Elfed's opposites by David McKee. ISBN 9781855969308. Published by Dref Wen in 2012. Publication and catalogue information, links to buy online and reader comments.