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