P1073 Fersiwn Saesneg hefyd ar gael = English version also available.
Buy a copy
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Cymry enwog by Cen Williams. ISBN 1902724119. Published by Cyhoeddiadau Relay in 2000. Publication and catalogue information, links to buy online and reader comments.