Arg Saesneg gwreiddiol = Original English ed: Macdonald, 1983.
Cyfaddasiad Cymraeg = Welsh adaptation: Gwenno Hywyn.
1 llyfr canllawiau; 2 set o 12 cerdyn = 1 book of guidelines; 2 sets of 12 cards.
O le i le by Doug Kincaid. ISBN 1870470087. Published by Cyngor Sir Gwynedd in 1989. Publication and catalogue information, links to buy online and reader comments.