1. Published

   Yr Ianci o'r Blaenau: Golwg ar Gerddi Gwyn Thomas, 1962-1981.

   Wiliams, G. & Walford Davies, J. (ed.), 1 Jan 2007, Gweledigaethau: Cyfrol Deyrnged yr Athro Gwyn Thomas. 2007 ed. Cyhoeddiadau Barddas, p. 242-68

   Research output: Chapter in Book/Report/Conference proceeding › Chapter

2. Published

   Pob Beirniadaeth Drosodd? Diwedd Teyrnasiad Cynan

   Wiliams, G., 1 Jul 2012, In: Llên Cymru. 35, 1, p. 68-115

   Research output: Contribution to journal › Article › peer-review

3. Published

   Bu Cynan Yma: Sensoriaeth Gymraeg, 1931-1968

   Wiliams, G., 1 Oct 2013, Ysgrifau Beirniadol XXXII. Gwasg Gee, p. 11-79

   Research output: Chapter in Book/Report/Conference proceeding › Chapter

4. Published

   Tir Newydd: Agweddau ar Lenyddiaeth Gymraeg a'r Ail Ryfel Byd

   Wiliams, G., 1 Jan 2005, University of Wales Press.

   Research output: Book/Report › Book

5. Published

   'Cysgodion Rhyfel': Adolygiad o Barbara Davies, 'Y Faciwi' (Y Lolfa, 2013); Cledwyn Jones, Yr Awyrennwr (Gwasg Carreg Gwalch, 2013); a Gerwyn James, Y Rhwyg: Hanes y Rhyfel Mawr yn Ardal Llanfair Pwllgwyngyll 1914-1932 (Gwasg Carreg Gwalch, 2013)

   Wiliams, G., 2013, In: Barn. 608, p. 56-7 2 p.

   Research output: Contribution to journal › Book/Film/Article review

6. Published

   'Y Tad a'r Mab': Adolygiad ar Harri Pritchard Jones, Disgyn i'w Lle (Gwasg Gomer, 2014)

   Wiliams, G., 2014, In: Barn. 618/619

   Research output: Contribution to journal › Book/Film/Article review

7. Published

   Cynan: Drama Bywyd Albert Evans Jones (1895-1970)

   Wiliams, G., 22 Oct 2020, Talybont: Y Lolfa. 504 p.

   Research output: Book/Report › Book

8. Published

   Er cof am David Henry Williams

   Wiliams, G., 2019, historypoints.org.

   Research output: Other contribution

9. Published

   LLYWELYN-WILLIAMS, ALUN (ALUN RHUN LLEWELYN WILLIAMS), (1913 - 1988), bardd a beirniad llenyddol

   Wiliams, G., 7 Aug 2018, Y Bywgraffiadur Cymreig. National Library of Wales (NLW)

   Research output: Chapter in Book/Report/Conference proceeding › Entry for encyclopedia/dictionary

10. Published

    'A gafwyd cofio "gwahanol"?

    Wiliams, G., Dec 2018, In: Barn. Rhagfyr/Ionawr 2018/19, 671/672, p. 46-8 3 p.

    Research output: Contribution to journal › Article