'Dylunio gan Huw Vaughan Jones' - ar y clawr cefn = On back cover. Teitl o'r clawr = Title from cover.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Ffrindiau. Published by Athrawon Bro in 2008. Publication and catalogue information, links to buy online and reader comments.