The laws from K, Peniarth 40, in the hand of Lewys Glyn Cothi were transcribed by Dr Sara Elin Roberts, as part of the Leverhulme-funded Project on Autograph Manuscripts.
The transcription follows the guidelines of the British Academy Project 'The Development of the Welsh Language (Datblygiad yr Iaith)' and is included in Version 2.0 of its 15th-century prose website 'Rhyddiaith y 15fed Ganrif': 15th century middle welsh prose manuscripts