English: The Health Protection (Coronavirus, International Travel and Restrictions) (Amendment) (No. 4) (Wales) Regulations 2021
Welsh: Rheoliadau Diogelu Iechyd (Coronafeirws, Teithio Rhyngwladol a Chyfyngiadau) (Diwygio) (Rhif 4) (Cymru) 2021
Subject: Teitlau deddfwriaeth