| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Geiriadur Bach, Y / Welsh Pocket Dictionary, The | 978-0-9538554-2-1 | 2008 | W. O. Thomas |
| Geiriadur Mawr: Complete Welsh-English, English-Welsh Dictionary | 978-0-7154-0543-7 | 1987 | W.O. Thomas |
| Geiriadur Mawr, Y: The Complete Welsh-English, English-Welsh Dictionary | 978-0-9538554-1-4 | 2001 | W. O. Thomas |
| Y Geiriadur Mawr: Complete Welsh-English, English-Welsh Dictionary | 978-0-85088-462-3 | 1998 | " |
H. E. · H. Evans · H. M. · H. Meurig · M.E · M. Evans
Christopher Davies Publishers · Dinefwr Publishers Ltd · Gomer Press