Arg. Saesneg gwreiddiol = Original English ed.: London: Scholastic Ltd., 1996.
Addasiad Cymraeg gan = Welsh adaptation by: Howard Alun Williams.
Taclo technoleg : meithrin dylunio a thechnoleg yn yr ysgol gynradd by Dave Boyle. ISBN 186085320X. Published by Cyd-Bwyllgor Addysg Cymru in 1998. Publication and catalogue information, links to buy online and reader comments.