John Winterson Richards, The Creation of an Enterprise Culture in Wales Ychwanegu i'r clipfwrdd R2/28 Ffeil 1992 Rhan oInstitute of Welsh Affairs Records,
John Winterson Richards, The Creation of an Enterprise Culture in Wales Ychwanegu i'r clipfwrdd R3/4 Ffeil 1992 Rhan oInstitute of Welsh Affairs Records,
Creating an Entrepreneurial Wales Ychwanegu i'r clipfwrdd G/9 Ffeil 2000-2001 Rhan oInstitute of Welsh Affairs Records,