1. Published

   Addysgu dysgwyr ail Iaith

   Gruffydd, I., 2021, Cyflwyniad i Ieithyddiaeth. Cooper, S. & Arman, L. (eds.). Cyntaf ed. Caerfyrddin: Coleg Cymraeg Cenedlaethol, p. 224-227

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

2. Published

   Dysgu Cymraeg yn y gwaith neu ar gyfer y gwaith

   Gruffydd, I., 7 Sept 2022, Y Gymraeg a gweithle'r Gymru gyfoes. Jewell, R. & Williams, R. H. (eds.). cyntaf ed. Caerdydd: Gwasg Prifysgol Cymru, p. 55-79 25 p.

   Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

3. Published

   Strategic management of Welsh language training on a macro and micro level

   Gruffydd, I., Hodges, R. & Prys, C., Sept 2023, In: Current issues in language planning. 24, 4, p. 380-399 20 p.

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

4. Unpublished

   Datblygu Cynllun Adeiladu Hyder yn yr Iaith Gymraeg: Adroddiad ar gyfer Y Ganolfan Dysgu Cymraeg Genedlaethol gan Brifysgol Bangor

   Parry, D., Hughes, L. A., Gruffydd, I. & Hughes, C., 30 Sept 2019, (Unpublished) 121 p.

   Research output: Book/Report › Commissioned report

5. Unpublished

   Datblygu Cynllun Adeiladu Hyder Iaith Gymraeg

   Parry, D., Gruffydd, I., Hughes, L. A. & Hughes, C., 9 Oct 2020, (Unpublished) 82 p.

   Research output: Book/Report › Commissioned report