"Dyma adroddiad prosiect ar y cyd rhwng Canolfan Llywodraethiant Cymru ym Mhrifysgol Caerdydd ac Uned y Cyfansoddiad yn UCL = This is the report of a joint project of the Wales Governance Centre at Cardiff University and the Constitution Unit at UCL."
Darparu model pwerau wedi cadw'n ôl ar gyfer datganoli i Gymru : Medi 2015 = Delivering a reserved powers model of devolution for Wales : September 2015. Published by Cardiff Univeristy in 2015. Publication and catalogue information, links to buy online and reader comments.