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
"Tolkien, J. R. R. (John Ronald Reuel)","Tree and leaf ; Smith of Wootton Major ; The homecoming of Beorhtnoth, Beorhthelm's son",,Unwin,1975,Unwin paperbacks,,0048200166,,https://cir.nii.ac.jp/crid/1130282268892183168