| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Annwyl Kate, Annwyl Saunders - Gohebiaeth 1923-1983: Gohebiaeth, 1923-83 | 978-0-907158-57-8 | 1992 | Kate Roberts |
| Cyfrolau Saunders Lewis: The Eve of St John a Gwaed Yr Uchelwyr | 978-88-88039-25-1 | 2003 | |
| Dramau Saunders Lewis i Blant a Phobl Ifanc: Blodeuwedd | 978-1-86085-410-1 | 2000 | |
| Monica | 978-1-85411-195-1 | 1997 | |
| Plays of Saunders Lewis, The | 978-0-9540569-4-0 | 2002 | |
| Saunders Lewis: A Presentation of His Work | 978-0-87243-187-4 | 1990 | |
| Selected Poems of Saunders Lewis | 978-0-7083-1194-3 | 1993 | |
| Siwan a Cherddi Eraill | 978-0-9540569-0-2 | 2018 | |
| Williams Pantycelyn | 978-1-78316-962-7 | 2016 | |
Dinefwr Publishers Ltd · Il Calamo · National Library of Wales · Seren · Templegate Pub · Uned Iaith Genedlaethol Cymru CBAC · University of Wales Press