Argraffiad Saesneg gwreiddiol = Original English edition : London : Abelard-Schuman, 1982.
Argraffiad Cymraeg gwreiddiol = Original Welsh edition : 1993.
Teitl clawr = Cover title.
Annwyl Sw = Dear zoo by Rod Campbell. ISBN 185596516X. Published by Gwasg y Dref Wen in 2002. Publication and catalogue information, links to buy online and reader comments.