'Ysgrifennwyd y llyfryn hwn gan Daniel Butler' - tu fewn i'r clawr cefn = inside back cover.
Fersiwn Saesneg hefyd ar gael = English version also available: Wildlife walks in Brecon Beacons National Park.
Troedio llwybrau natur ym Mharc Cenedlaethol Bannau Brycheiniog : detholiad o deithiau cerdded i'r teulu gyda mapiau by Daniel Butler. ISBN 9780905293165. Published by Parc Cenedlaethol Bannau Brycheiniog in 2006. Publication and catalogue information, links to buy online and reader comments.