1. Published

   Addysg Cyfrwng Cymraeg fel System.

   Baker, C. R., Jones, T. P., Roberts, G. (ed.) & Williams, C. (ed.), 1 Jan 2003, Addysg Gymraeg Addysg Gymreig. 2003 ed. Ysgol Addysg Prifysgol Cymru Bangor, p. 66-84

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

2. Published

   Addysg Gynradd Gymraeg: Trochi a Chyfoethogi Disgyblion.

   Lewis, W. G., 1 Dec 2003, In: Cylchgrawn Addysg Cymru/The Welsh Journal of Education. 12, 2, p. 49-64

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

3. Published

   Addysg ddwyieithog yn yr unfed ganrif ar hugain: adolygu'r cyd-destun rhyngwladol.

   Lewis, W. G., 1 Jan 2011, In: Gwerddon. 7, p. online

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

4. Published

   Addysg drochi yng Nghymru: Methodolegau a sialensau.

   Lewis, W. G. & Osmond, J. (ed.), 1 Jan 2008, Creu Cymru Ddwyieithog – Rôl y Gymraeg mewn Addysg. 2008 ed. Institute of Welsh Affairs

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

5. Published

   Addysgu Llenyddiaethau yng Nghymru: Effeithiau’r Pandemig ac Amrywiaeth

   Olive, S., 10 Jul 2023, 4 p.

   Research output: Other contribution

6. Published

   Adeiladu gwydnwch trwy 'Rhieni Ifanc Ni’: astudiaeth ymchwil

   Davies, M., Wyn Jones, K. & Williams, E., 16 Jan 2017, Prifysgol Bangor University. 92 p.

   Research output: Book/Report › Commissioned report

7. Published

   Adult language learning: a survey of Welsh for adults in the context of language planning.

   Baker, C. R., Andrews, H., Gruffydd, I. & Lewis, W. G., 1 Jan 2011, In: Evaluation and Research in Education. 24, 1, p. 41-59

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

8. Published

   Advances in the Study of Bilingualism

   Mennen, I. C. (ed.), Thomas, E. M. (ed.) & Mennen, I. (ed.), 9 May 2014, 2014 ed. Multilingual Matters.

   Research output: Book/Report › Book

9. Published

   Agwedd amweddog at astudio arferion trosglwyddo cyfredol: cynllun cyffredinol

   Gathercole, V., Thomas, E., Deuchar, M. & Williams, E., 2007, Trosglwyddo Iaith mewn Teuluoedd Dwyieithog yng Nghymru . Thomas, E. & Gathercole, V. (eds.). Cardiff: Welsh Language Board, p. 13-19

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

10. Published

    Agweddar ar Ddwyieithrwydd

    Thomas, E. & Webb-Davies, P., 6 Aug 2017, Caerfyrddin, Wales: Coleg Cymraeg Cenedlaethol.

    Research output: Book/Report › Book › peer-review