P1073 Addaswyd o'r Saesneg = Adapted from English.
Buy a copy
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Os gweli di'n dda by Charlotte Stowell. ISBN 1874410313. Published by Cyhoeddiadau'r Gair in 1993. Publication and catalogue information, links to buy online and reader comments.