David Willis. Old and Middle Welsh(PDF). Department of Linguistics, University of Cambridge. Suarchyvuotas originalas(PDF) 2021-05-07. Nuoroda tikrinta 2021-05-04.
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David Willis. Old and Middle Welsh(PDF). Department of Linguistics, University of Cambridge. Suarchyvuotas originalas(PDF) 2021-05-07. Nuoroda tikrinta 2021-05-04.