著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Watkins, T. Arwyn and Ball, Martin J.","Celtic linguistics : readings in the Brythonic languages, festschrift for T. Arwyn Watkins = Ieithyddiaeth Geltaidd",,J. Benjamins,1990,Amsterdam studies in the theory and history of linguistic science,,9027235651,,https://cir.nii.ac.jp/crid/1130282271049886848