Deddf yr Undeb Ewropeaidd (Ymadael) a’r Fframweithiau Cyffredin: 26 Medi i 25 Rhagfyr 2021 - GOV.UK (www.gov.uk)(Saesneg yn Unig)
The European Union (Withdrawal) Act and Common Frameworks: 26 September to 25 December 2021 - GOV.UK (www.gov.uk)