Adnoddau
https://ylolfa.wordpress.com/2018/01/30/beth-syn-gwneud-clawr-da/
http://ifanmj.blogspot.com/2009/11/cloriau-cymraeg.html
https://www.bbc.co.uk/cymrufyw/35715329
https://ytwll.cymru/2014/01/cloriau-llyfrau/
https://gwanas.wordpress.com/2018/02/05/cloriau-llyfrau/
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