http://www.legislation.gov.uk/anaw/2017/1/schedule/23/paragraph/4/enacted/welshDeddf Treth Trafodiadau Tir a Gwrthweithio Osgoi Trethi Datganoledig (Cymru) 2017cyKing's Printer of Acts of Parliament2019-06-24ATODLEN 23DIWYGIADAU I DDEDDF CASGLU A RHEOLI TRETHI (CYMRU) 20164Ym Mhennod 2 o Ran 3, ym mhennawd y bennod hepgorer “TRETHDALWR”.