Dyma'r llyfr ehangaf ei rychwant a manylaf ei ymchwil ar Thomas Charles o'r Bala i'w gyhoeddi ers canrif a mwy.
- ISBN13 9781783162253
- Publish Date 15 July 2014 (first published 1 January 2014)
- Publish Status Active
- Publish Country GB
- Imprint University of Wales Press
- Format eBook
- Language Welsh