X-Files The Truth is Still Out There Thirty Years of The X-Files Jones Bethan Heftet / 2023 / Engelsk
Llyfrau Llafar Gwlad:60. Chwyn Joe Pye a Phincas Robin - Ysgrifau ar Ryfeddodau a Llên Gwerin Byd Natur Jones Bethan Wyn Heftet / 2004 / Walisisk
In the Shadow of Aran Parables from Farm Life in the Welsh Mountains Jones Mari Heftet / 1989 / Engelsk
Crowdfunding the Future Media Industries, Ethics, and Digital Society Bennett Lucy Heftet / 2015 / Engelsk
Crowdfunding the Future Media Industries, Ethics, and Digital Society Bennett Lucy Innbundet / 2015 / Engelsk