Ceridwen: differenze tra le versioni

* Patricia Monaghan, ''[http://books.google.it/books?id=nd9R6GQBB_0C&pg=PA84&dq=ceridwen+encyclopaedia&hl=it&sa=X&ei=S3gqT6vOE-jR4QSqtdH6DQ&ved=0CDAQ6AEwAA#v=onepage&q&f=false The encyclopedia of Celtic mythology and folklore]''], Infobase Publishing, 2004 ISBN 0816045240