Prinsdom van Wallis: Verskil tussen weergawes

* [[BBC Wales]]: History, ''[https://web.archive.org/web/20050311161622/http://www.bbc.co.uk/wales/history/sites/nation/pages/principality02.shtml The emergence of the principality of Wales]''; extractedverkry 26 MarchMaart 2008

* {{cite book |author=Davies, John|title=A History of Wales|authorlink=John Davies (historian)|publisher=Penguin |location=New York |year=1994|isbn=0-14-014581-8 }}

* {{cite book |author=Davies, John|title=The Celts|authorlink=John Davies (historian)|publisher=Cassell Illustrated |location=New York |year=2002|isbn=1-84188-188-0 }}

* {{cite book |author=Evans, Gwynfor|title=Cymru O Hud|authorlink=Gwynfor Evans|publisher= |location=Abergwyngregyn |year= |isbn= }}

* {{cite book |author=Morris, John E.|title=The Welsh Wars of Edward I|authorlink= John E. Morris|publisher=Combined Books |location=Conshohocken, PA. |year=1996 |isbn=0-938289-67-5 }}

* {{cite book |author=Lloyd, J.E|title=A History of Wales; From the Norman Invasion to the Edwardian Conquest|authorlink=John Edward Lloyd|publisher= Barnes & Noble Publishing, Inc.|location=New York |year=2004 |isbn=0-7607-5241-9 }}

* {{cite book |author=Stephenson, David|title=The governance of Gwynedd|authorlink=David Stephenson (historian)|publisher= University of Wales Press|location= |year=1984 |isbn=0-7083-0850-3 }}

* {{cite book |author=Warner, Philip|title=Famous Welsh Battles|authorlink=Philip Warner|publisher=Barnes & Noble Publishing, Inc.|location=New York |year=1997 |isbn=0-7607-0466-x0 }}