Arg Saesneg gwreiddiol = Original English ed: Macdonald, 1983.
1 llyfr canllawiau; 2 set o 12 cerdyn = 1 book of guidelines; 2 sets of 12 cards.
Y ddaear by Doug Kincaid. ISBN 1870470109. Published by SCDC Publications / Cyhoeddiadau PDCY in 1990. Publication and catalogue information, links to buy online and reader comments.